Logical ReasoningDifficulty: Hard

PT149 S3 Q25 Explanation

Salesperson: If your vacuuming

A free, expert breakdown of this official LSAT Logical Reasoning question.

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Stimulus

Salesperson: If your vacuuming needs are limited to cleaning small areas of uncarpeted floors, an inexpensive handheld vacuum cleaner is likely to be sufficient. After all, most are easy to use and needs on wood and tile floors.

What this question is testing

Strengthen

Your task

Find the choice that makes the argument's conclusion more likely to be true.

Common trap

Answers that are consistent with the argument but add no real support, or that strengthen a claim the argument doesn't make.

Winning move

Locate the gap between evidence and conclusion, then pick the choice that closes it.

Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.

The question
25.

The conclusion of the salesperson’s argument is most strongly supported if which one of the

Answer choices

  1. Correct53% picked this

    The only types of floor surfaces that most consumers encounter are carpet,

    Why this is right

    The conclusion excluded the possibility that people wanted this for carpet surfaces. It said, "if your needs are limited to non-carpeted floors". So, according to this answer, the only non-carpeted surfaces most consumers would be using this on are wood and tile, and the argument already established that this vacuum is likely to be sufficient on wood / tile.

    Skill tested: Strengthen · how this choice captures the argument's function is the move to repeat next time.

  2. Out of Scope: carpeted floors10% picked this

    Inexpensive handheld vacuum cleaners are sufficient for cleaning small areas of

    This sales pitch is only being made to people whose needs in a vacuum are "non-carpeted" floors. So an answer telling us what it does on carpeted floors has no bearing or impact on the argument. Conversationally, we might think, "But, isn't it a good thing to have options? Now if I want to use it on carpet I can." But logically it's irrelevant to assessing "whether or not this is a good vacuum choice for people whose needs are limited to non-carpeted surfaces".

  3. No Impact18% picked this

    Any handheld vacuum cleaner that is easy to use but sufficient only for cleaning small areas of uncarpeted floors

    This answer choice wants people to think we were supposed to be doing something with the internal logic of the adjectives we used to describe this vacuum. This answer just tells us a relationship that "all handhelds good for small stuff tend to be inexpensive". Great, there's a lot of consistency within that class of vacuum. But that doesn't help me assess whether I should buy that type of vacuum.

  4. No Impact13% picked this

    If your household cleaning needs include cleaning small areas of uncarpeted floors, it is likely that you will

    This answer is just trying to convince us that we should buy a vacuum cleaner. The correct answer needs to help convince us to buy a certain type of vacuum cleaner.

  5. No Impact5% picked this

    The more versatile a vacuum cleaner is, the more likely it is

    We actually don't know whether these small handhelds are more / less / similarly versatile to other vacuums. The fact that the author doesn't seem to be suggesting them for carpeted floors might suggest they're of limited versatility. But those huge vacuums that do well on carpet might not be able to do small tile surfaces that well. So there's not even a way to apply this rule, since we don't know which types of vacuums are more or less versatile.

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