Week 6 · Skill Lab

Evidence & Arguments

Separate a claim from the reasons behind it, match evidence to the point it supports, and judge whether an argument is actually holding up.

By the end of this lab you will be able to

  • Identify the claim, the reasons, and the evidence in an argument
  • Match a specific piece of evidence to the specific claim it supports
  • Judge whether evidence is relevant, sufficient, and representative
  • Name common weaknesses in an argument

Course outcomes covered

  • Explain how an author uses reasons and evidence to support a point, and evaluate whether that evidence is sufficient

From the ENG0300 course syllabus.

Learn

How this skill works

Read this first. Everything after it assumes these ideas.

Claim, reason, evidence

An argument has three layers, and questions about evidence usually turn on telling them apart.

  • The claim is often in the first or last paragraph.
  • Reasons frequently begin with because, since, or the reason is.
  • Evidence is the specific material: numbers, studies, examples, quotations, expert statements.
LayerQuestion it answersExample
ClaimWhat does the author want me to accept?The city should extend clinic hours into the evening.
ReasonWhy should I accept it?Because many patients cannot leave work during the day.
EvidenceHow does the author know?A clinic survey found that 62% of missed appointments were scheduled between 9 a.m. and 3 p.m.

Three tests for evidence

Once you have located the evidence, you still have to judge it. Three questions do most of the work, and TABE items are usually built on one of them.

  • Relevant — does this evidence actually bear on the claim, or on a nearby claim the author did not make?
  • Sufficient — is there enough of it? One dramatic story rarely supports a claim about a whole population.
  • Representative — does the evidence describe a typical case, or an unusual one chosen because it is striking?

Test tip

When asked which evidence best supports a claim, restate the claim in your own words first. Distractors are usually true statements from the passage that support a slightly different claim.

Common weaknesses to name

Naming a weakness is not the same as saying the claim is false. An argument can reach a correct conclusion on insufficient evidence. The question on a reading test is whether the author supported the claim, not whether you agree with it.

WeaknessWhat it looks like
Too small a sampleA conclusion about all workers drawn from one workplace.
Anecdote in place of dataOne person's experience treated as proof of a general pattern.
Irrelevant supportEvidence that is true and interesting but does not address the claim being made.
Correlation treated as causeTwo things happened together, so the author says one caused the other.
Ignoring the obvious objectionThe author never addresses the strongest reason a reader might disagree.
See It

A worked example

Watch the reasoning before you try it. Notice the order of the moves — that order is the skill.

Evaluating support in a workplace argument

The Case for a Four-Day Week

Argument156 words

Employers should move to a four-day workweek without reducing pay.

The strongest reason is retention. Replacing a trained employee costs an employer substantially more than keeping one, and surveys consistently find schedule flexibility ranking among the top reasons workers give for staying in a job or leaving it.

A second reason is output. In several published trials, companies that shortened the week reported that productivity held steady or improved. Employees reported using the extra day for the errands, appointments, and family obligations that otherwise leak into working hours.

My own former manager switched our team to four days and said afterward that she would never go back. Everyone on that team was happier.

Critics raise the obvious objection: some work cannot be compressed. A hospital ward, a bus route, and a restaurant kitchen all require coverage during fixed hours, and a shorter week for those workers means hiring more of them, not rearranging the same hours.

Original passage — BEOC Academic Bridge

The question

Which of the author's reasons is best supported, and which is weakest?

Thinking it through

  1. Locate the claim.

    Paragraph 1, stated outright: employers should move to a four-day week without cutting pay. Everything after is support.

  2. Sort the support into reasons.

    Retention (paragraph 2), output (paragraph 3), a personal example (paragraph 4). Paragraph 5 raises an objection rather than supporting the claim.

  3. Test paragraph 3 for sufficiency and relevance.

    It cites several published trials, gives the result, and explains a mechanism — the extra day absorbs errands that otherwise eat working hours. Multiple sources, directly on the claim. This is the strongest support.

  4. Test paragraph 4.

    One manager, one team, and "everyone was happier" with nothing to verify it. This is anecdote standing in for data. It is the weakest support, even though it is the most vivid.

  5. Notice what paragraph 5 does for the argument.

    The author states the objection fairly and does not answer it. That is honest, but it leaves a real gap: the claim says employers, and the objection shows an entire category of employers the argument does not cover.

The answer

The output reason in paragraph 3 is best supported, because it rests on several published trials and offers a mechanism. The personal example in paragraph 4 is weakest, because a single team treated as proof is anecdote rather than evidence. The unanswered objection in paragraph 5 also limits the claim, since it identifies workplaces the argument does not address.

Take this with you

The most memorable paragraph is often the weakest one. Vivid detail is not the same as sufficient evidence.

Try It

Your turn, with support

One question, with a hint available. Nothing here is graded.

Overdraft Fees

Argument79 words

Overdraft fees should be capped by regulation. Banking data has repeatedly shown that a small share of account holders pay the large majority of all overdraft fees collected, and that this group is concentrated among customers with the lowest average balances. A fee designed as a deterrent has become a recurring charge falling on the customers least able to absorb it. My cousin once paid four overdraft fees in a single week, which shows how quickly they add up.

Original passage — BEOC Academic Bridge

Question 1Multiple choiceDeveloping
Which sentence provides the strongest support for the author's claim?
Practice

Practice on a full passage

A longer passage with several questions. Check each answer as you go.

Free Fares

Argument175 words

The city should eliminate fares on its bus system.

Fare collection is expensive in ways that are easy to overlook. Fare boxes must be maintained, revenue must be counted and transported, and fare enforcement requires staff. In some smaller systems, these costs consume a meaningful share of the revenue the fares bring in.

Free fares also speed up service. Boarding is the slowest part of a bus route, and passengers who do not need to pay board through any door. One transit agency that removed fares on a downtown route reported that average trip times fell by roughly nine percent.

Ridership rises as well. Every system that has tried free fares has seen ridership grow, in some cases dramatically.

A friend of mine stopped driving entirely after her city made buses free, which shows that people will change their habits when the barrier is removed.

None of this addresses the largest question, which is how the lost fare revenue would be replaced in a system where fares cover a substantial share of the operating budget.

Original passage — BEOC Academic Bridge

Question 1Multiple choiceFoundation
What is the author's central claim?
Question 2Evidence selectionTABE Ready
Which piece of evidence most directly supports the claim that free fares make buses faster?
Question 3Multiple choiceChallenge
Which paragraph contains the WEAKEST support for the author's claim, and why?
Question 4Short responseChallenge
Challenge

A harder, TABE-style set

Denser text and less obvious answers — closer to what the test will ask of you.

Every paragraph after the first offers support, but the support is not equally strong. For each question, restate the exact claim being supported before you look at the choices — several choices are true sentences that support a different point.

Put the Empty Lots to Work

Argument346 words

Most older neighborhoods have one: a vacant lot behind a chain-link fence, owned by the city because the last owner stopped paying taxes. Some have sat empty for a decade. The city should lease these lots to neighborhood groups as community gardens, starting with every lot that has gone unsold for more than two years.

The first reason is money. An empty lot is not free to own: the city pays crews to mow it, fix its fence, and haul away dumped mattresses and tires. Two years ago, a city pilot let volunteer groups plant gardens on twelve lots. According to the pilot's first-year report, crews were sent to those twelve lots 140 times in the year before the gardens opened and 9 times in the year after, because the gardeners now handle the mowing and cleanup themselves.

Gardens also put fresh food on tables that need it. Loretta Banks, a home health aide with a pilot plot, grows enough tomatoes, peppers, and greens that she has not bought a vegetable from June through September. Multiply her summer across every vacant lot, and grocery bills would fall across the city.

Finally, gardens bring neighbors together. A county survey found that residents who live within a ten-minute walk of a public park are more likely than other residents to say they trust their neighbors. A garden on the corner would do the same work for blocks that have no park at all.

Some council members object that the lots should be kept ready for developers, since new housing would bring in property taxes that a garden never will. The concern is fair, and the pilot was built around it. Every pilot lease lets the city end it with sixty days' notice. When a builder bought one of the twelve lots last spring, the garden group harvested its last crop and cleared the lot before the deadline. A garden does not block a sale; it keeps the lot in use until a buyer comes. Until then, the city should let its neighbors put the empty lots to work.

Original passage — BEOC Academic Bridge

Question 1Multiple choiceTABE Ready
What is the author's central claim?
Question 2Evidence selectionChallenge
Which sentence from the passage best supports the answer to the previous question?
Question 3Select all that applyChallenge
In paragraph 5, the author argues that a garden would not stop the city from selling a lot. Which TWO details provide the strongest support for that point? Select two.
Question 4Multiple choiceChallenge
Which detail supports a claim slightly different from the one the author uses it to support?
Question 5Short responseChallenge
Answer Review

Why each answer is right or wrong

The reasoning behind every choice, including the ones designed to catch you.

Work through the practice first, then open a question below to see the full reasoning. Reading why a wrong answer is wrong is what stops you from choosing it again on the test.

Practice set

Q1What is the author's central claim?

Correct answer: B. The city should eliminate fares on its bus system.

Why: Paragraph 1 states the claim in one sentence. Every paragraph that follows is a reason for it or a limitation on it.

Every choice, explained

  • A.Fare collection costs more than most people realize. — A reason offered in paragraph 2, not the claim.
  • B.The city should eliminate fares on its bus system. — Correct. It is the position the rest of the passage argues for.
  • C.Boarding is the slowest part of a bus route. — A supporting detail inside the speed argument.
  • D.Free fares increase ridership in every system that has tried them. — A reason in paragraph 4 — and one whose support the passage never provides.
Q2Which piece of evidence most directly supports the claim that free fares make buses faster?

Correct answer: B. One transit agency that removed fares on a downtown route reported that average trip times fell by roughly nine percent.

Why: The claim is about speed. Only this option reports a measured change in trip time after fares were removed.

Every choice, explained

  • A.Fare boxes must be maintained and revenue must be transported. — Supports the cost-of-collection reason, not the speed reason.
  • B.One transit agency that removed fares on a downtown route reported that average trip times fell by roughly nine percent. — Correct. A measured outcome on the exact variable the claim concerns.
  • C.Every system that has tried free fares has seen ridership grow. — Ridership is a different outcome. More riders could in principle slow boarding, not speed it.
  • D.A friend stopped driving entirely after her city made buses free. — An anecdote about one person's driving, unrelated to trip times.
Q3Which paragraph contains the WEAKEST support for the author's claim, and why?

Correct answer: C. Paragraph 5, because a single friend's experience is treated as proof of a general pattern

Why: Paragraph 5 is the clearest case of anecdote standing in for evidence: one person's behavior, presented with "which shows," as though it established a general rule. Paragraph 4 is also weak — an unsupported "every system" claim — but paragraph 5 explicitly asks a single story to do the work of data.

Every choice, explained

  • A.Paragraph 2, because the costs of fare collection are hard to measure — Paragraph 2 names specific, checkable costs. It is among the better-supported paragraphs.
  • B.Paragraph 4, because it makes a sweeping claim about every system with no evidence attached — A genuine weakness — "every system" is a sweeping claim — but paragraph 5 is the weaker of the two, because it presents one anecdote as proof.
  • C.Paragraph 5, because a single friend's experience is treated as proof of a general pattern — Correct. "Which shows" asks one friend's experience to establish a pattern it cannot establish.
  • D.Paragraph 6, because it undermines the author's own argument — Paragraph 6 acknowledges a limitation honestly. Naming an unanswered objection is a strength in an argument, not weak support.
Q4The author admits in paragraph 6 that the funding question is unanswered. In two or three sentences, explain what evidence the author would need to add to make the argument sufficient.

Model response: The author would need evidence about how the lost fare revenue would be replaced — for example, figures showing what share of the operating budget fares actually cover, and a specific funding source that could cover the gap. Evidence from a comparable city that eliminated fares and sustained service afterward would also strengthen the case. Without that, the argument establishes benefits but never shows that the plan is affordable.

Why: A sufficient argument has to address the strongest objection to it. Here that means showing where replacement revenue comes from, with figures rather than assurances.

Challenge

Q1What is the author's central claim?

Correct answer: B. The city should lease its long-unsold vacant lots to neighborhood groups as community gardens.

Why: The last sentence of paragraph 1 states the position: "The city should lease these lots to neighborhood groups as community gardens, starting with every lot that has gone unsold for more than two years." Paragraphs 2 through 4 each give a reason for it, paragraph 5 answers an objection to it, and the final sentence restates it.

Every choice, explained

  • A.Vacant lots cost the city money to mow, fence, and clean up. — A reason from paragraph 2. It explains why the author wants the change; it is not the change itself.
  • B.The city should lease its long-unsold vacant lots to neighborhood groups as community gardens. — Correct. It is the position that every other paragraph either supports or defends.
  • C.Community gardens can end grocery bills for the families who work them. — An overstated version of the food reason in paragraph 3. It is support the author offers, not the position that support is for.
  • D.The city should hold its vacant lots for developers who will build housing. — This is the objection the author answers in paragraph 5 — the opposite of the author's position.
Q2Which sentence from the passage best supports the answer to the previous question?

Correct answer: C. According to the pilot's first-year report, crews were sent to those twelve lots 140 times in the year before the gardens opened and 9 times in the year after, because the gardeners now handle the mowing and cleanup themselves.

Why: Restate the answer you gave to the previous question: the city should turn its long-unsold lots into gardens. The best support is evidence about gardens on the city's own lots, with a named source and numbers you could check. The pilot report's before-and-after count of crew visits is the only choice that does all three, and it shows the change the author wants already working on twelve lots.

Every choice, explained

  • A.Loretta Banks, a home health aide with a pilot plot, grows enough tomatoes, peppers, and greens that she has not bought a vegetable from June through September. — The most vivid sentence in the passage, and that is the trap. It is one gardener's summer — an anecdote standing in for evidence — and it cannot show what gardens would do across the city.
  • B.Some council members object that the lots should be kept ready for developers, since new housing would bring in property taxes that a garden never will. — This sentence states the objection. It supports the opposite position, holding the lots for developers, not the author's claim.
  • C.According to the pilot's first-year report, crews were sent to those twelve lots 140 times in the year before the gardens opened and 9 times in the year after, because the gardeners now handle the mowing and cleanup themselves. — Correct. It names a source, gives before-and-after numbers, and describes gardens on the city's own lots, so it bears directly on the claim.
  • D.Until then, the city should let its neighbors put the empty lots to work. — This restates the claim in new words. A claim cannot support itself.
Q3In paragraph 5, the author argues that a garden would not stop the city from selling a lot. Which TWO details provide the strongest support for that point? Select two.

Correct answer: A. "Every pilot lease lets the city end it with sixty days' notice." (paragraph 5) • D. "When a builder bought one of the twelve lots last spring, the garden group harvested its last crop and cleared the lot before the deadline." (paragraph 5)

Why: Restate the point first: a garden would not get in the way of a sale. Two details bear on exactly that — the lease term that lets the city take a lot back, and the one time a pilot lot was actually sold. The crew-visit numbers are the strongest evidence in the whole passage, but they support a different point, which is why they are the most tempting wrong answer.

Every choice, explained

  • A."Every pilot lease lets the city end it with sixty days' notice." (paragraph 5) — Correct. It shows the city keeps the power to take a lot back for a buyer on short notice.
  • B."crews were sent to those twelve lots 140 times in the year before the gardens opened and 9 times in the year after" (paragraph 2) — Strong evidence, but for a different point: it shows that gardens cut the city's cleanup costs. It says nothing about whether a lot can still be sold.
  • C."new housing would bring in property taxes that a garden never will" (paragraph 5) — This is part of the objection. It gives a reason to sell the lots, not a reason to believe a garden would allow a sale.
  • D."When a builder bought one of the twelve lots last spring, the garden group harvested its last crop and cleared the lot before the deadline." (paragraph 5) — Correct. It shows the lease term working in practice: a lot was sold, and the gardeners left on time.
  • E."she has not bought a vegetable from June through September" (paragraph 3) — One gardener's harvest, offered for the food reason in paragraph 3. It has nothing to do with selling a lot.
Q4Which detail supports a claim slightly different from the one the author uses it to support?

Correct answer: D. The county survey of residents who live near a public park

Why: Restate the claim in paragraph 4 first: gardens bring neighbors together. The survey is about parks, not gardens, so at most it supports a claim about parks — and even then it shows only that living near a park and trusting neighbors go together, not that one causes the other. The author closes the gap with an assumption, that a garden "would do the same work," rather than with evidence.

Every choice, explained

  • A.The pilot report's count of crew visits to the twelve lots before and after the gardens opened — This supports exactly the point it is used for — that gardens save the city money. It is relevant, measured, and sourced.
  • B.Loretta Banks's summer harvest from her pilot plot — Weak support, but for the right claim: it really is about a garden producing food. Its problem is sufficiency — one gardener cannot show what would happen across the city — not relevance.
  • C.The builder who bought one of the pilot lots last spring — This supports exactly the point it is used for — that a garden does not block a sale.
  • D.The county survey of residents who live near a public park — Correct. The survey measures something about parks, and the author stretches it to cover gardens. It supports a nearby claim, about parks, that the author did not make.
Q5Is the author's evidence sufficient to support the central claim? In three or four sentences, name the strongest support in the passage, name one reason whose support falls short and explain what is wrong with it, and give your overall judgment.

Model response: The strongest support is the pilot's first-year report, which found that crew visits to the twelve garden lots fell from 140 to 9 in a year, and the author also answers the developer objection with the sixty-day lease term and a lot that was actually sold. The other two reasons fall short: the food reason rests on one gardener's summer, and the neighbor reason rests on a survey about parks rather than gardens. Even the best evidence covers only twelve lots over a single year. The evidence is sufficient for a narrower claim, that gardens save the city money without blocking sales, but not for the author's promise that gardens would lower grocery bills and build trust across the city.

Why: A complete answer does three jobs: it credits the support that holds up, names the specific weakness in the support that does not — an anecdote standing in for evidence, or evidence about a different claim — and reaches a judgment that fits the evidence. The strongest answers notice that the evidence supports a narrower claim than the one the author makes. Judging the evidence insufficient is not the same as calling the claim false; the question is only whether the author supported it.

Mastery Check

Check yourself

A short formative check. It is not recorded — use it to decide whether to move on or review.

One short argument, four items. If you miss one, the review below each answer will tell you which part of the lesson to revisit.

Cameras for the Vans

Workplace108 words

The company should install backup cameras in every delivery van. Backing up is the riskiest part of a driver's shift. Drivers reverse into docks, alleys, and driveways many times a day, often with no one outside to guide them. The safety office's accident log shows that 15 of the 22 van accidents drivers reported last year happened while backing up. Repairs from those accidents averaged $2,100 each, according to the same log. Our parts supplier quotes about $300 to install a camera. Cameras are the right investment for this fleet, and the sooner we add them, the sooner we stop paying for the same accident again and again.

Original passage — BEOC Academic Bridge

Question 1Multiple choiceFoundation
What is the author's claim?
Question 2Evidence selectionDeveloping
Which sentence from the passage is evidence, rather than the claim or a restatement of it?
Question 3Multiple choiceTABE Ready
The author includes the average repair cost and the price of a camera mainly to —
Question 4Multiple choiceTABE Ready
Which additional evidence would most strengthen the author's argument?
Write It

Now write it yourself

The same skill, going the other direction. Nothing here is submitted from this page — you will copy your paragraph into Brightspace when it is ready.

Claim, Evidence, ExplanationBased on “Free Fares”

In Free Fares you separated the support that held up from the support that did not. The nine-percent trip-time figure was evidence. The friend who stopped driving was an anecdote standing in for evidence, and you caught it.

Now build the structure yourself. Write one paragraph of five to seven sentences in Claim–Evidence–Explanation order about whether the city should eliminate bus fares. Take either side.

Draw your evidence from the passage — the fare-collection costs, the nine-percent drop in trip times, the ridership increases, or the unanswered question about replacing the revenue. Do not use the friend who stopped driving; you already know why. After each piece of evidence, explain what it proves. The explanation is the part most writers skip, and it is worth as much as the evidence.

Before you submit, check each one

Ticking these is for your own tracking. Nothing here is scored or recorded.

Sentence frames

Starters, not a template. Fill one in, change the wording to sound like you, or write past it entirely.

  • The city should / should not eliminate bus fares because ______.
  • The passage reports that ______.
  • This matters because ______, which shows ______.

0 words · 0 sentences(a rough count from end punctuation — a guide, not a rule)

What you type stays in this browser. It is not sent anywhere, not scored by software, and not seen by anyone until you paste it into Brightspace yourself.

Score your own draft

This is the same 10-point rubric attached to the Brightspace dropbox. Scoring yourself first is the fastest way to find what to fix. Your score here is yours alone — it is not recorded and it is not your grade.

Focus — 3 points

One clear controlling idea, stated early and held to. Every sentence belongs to that idea — nothing wanders off the question that was asked.

Evidence & Development — 3 points

Specific support from the passage — details, examples, or quoted words — and an explanation of what that support shows. Not just a detail dropped in and left alone.

Organization — 2 points

A sensible order a reader can follow, with transitions that signal how one sentence relates to the next. A beginning, a middle, and an ending that lands.

Conventions — 2 points

Complete sentences, subject-verb agreement, capitalization, and end punctuation. Errors do not stop a reader from understanding you.

Score all four strands to see your total.

▸ Show a strong example

Notice the rhythm: claim, then evidence, then explanation, then evidence, then explanation. The explanation sentences are the ones doing the arguing.

The city should not eliminate bus fares until it has named the money that would replace them. The passage concedes its own weakest point in the last paragraph: fares cover a substantial share of the operating budget, and nothing in the argument says how that share would be made up. That matters because a bus system with no fare revenue and no replacement revenue does not become free — it becomes smaller, through cut routes and longer waits. The benefits the passage claims are real: removing fare boxes speeds up boarding, and one agency measured a nine percent drop in average trip times. But a nine percent time saving on routes that run half as often is not a gain for the rider who is waiting. Free fares are worth doing; they are not worth doing before the budget question is settled.

Which sentence earns which strand

  1. The city should not eliminate bus fares until it has named the money that would replace them.

    Focus — An arguable claim, and a narrow one. Until it has named is what makes this a position rather than a slogan.

  2. The passage concedes its own weakest point in the last paragraph: fares cover a substantial share of the operating budget, and nothing in the argument says how that share would be made up.

    Evidence & Development — Evidence taken from the passage, including the fact that the argument itself leaves the question open.

  3. That matters because a bus system with no fare revenue and no replacement revenue does not become free — it becomes smaller, through cut routes and longer waits.

    Evidence & Development — The explanation sentence. It says what the evidence proves instead of leaving the reader to work it out.

  4. The benefits the passage claims are real: removing fare boxes speeds up boarding, and one agency measured a nine percent drop in average trip times.

    Organization — Conceding the other side's best evidence before answering it. Organization at the level of argument, not just order.

  5. But a nine percent time saving on routes that run half as often is not a gain for the rider who is waiting.

    Organization — The answer to the concession, which is why the concession was safe to make.

  6. Free fares are worth doing; they are not worth doing before the budget question is settled.

    Conventions — The closing sentence advances past the opening claim. The semicolon correctly joins two complete, balanced sentences.

Turn it in

Copy your paragraph, then paste it into WRITE IT! Week 6 — Claim, Evidence, Explanation in Brightspace (Week 6).

Write your paragraph first — then these buttons turn on.

Finished Evidence & Arguments?

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