Logical ReasoningDifficulty: Easy

PT136 S4 Q4 Explanation

Company spokesperson: Household

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

TopicsWeaken

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Stimulus

Company spokesperson: Household Products magazine claims that our Filterator X water filter does not remove chemical contaminants in significant amounts. This attack on the quality of our product is undermined by the experience of who are satisfied with the product's performance.

What this question is testing

Weaken

Your task

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

Common trap

Answers that look negative but attack a claim the argument never relied on.

Winning move

Find the assumption the argument depends on, then pick the choice that undermines 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
4.

Which one of the following, if true, most seriously undermines the company

Answer choices

  1. No Impact2% picked this

    Household Products did not evaluate whether the Filterator X water filter significantly improved the taste

    Taste is irrelevant to the argument about removing chemical contaminants, so it doesn't weaken the claim about the filter's effectiveness.

  2. Correct92% picked this

    Most Filterator X owners have no way to determine how effectively the product removes chemical

    Why this is right

    This states that most owners have no way to determine how effective the product is at removing contaminants. It weakens the argument by undermining the reliability of consumer satisfaction as a measure of the filter's performance, suggesting they are satisfied without actual knowledge of the filter's effectiveness.

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

  3. Strengthens3% picked this

    People whose household water contains chemical contaminants are more likely than other people to buy a

    This suggests that people with highly contaminated water are satisfied with the product, which could imply the filter is effective. Therefore, it strengthens rather than weakens the spokesperson's conclusion.

  4. No Impact1% picked this

    Very few people who own a Filterator X read Household Products on

    This notes that few owners read the magazine, which doesn’t affect the argument because it doesn't relate to the accuracy of consumer satisfaction as a measure of effectiveness.

  5. No Impact3% picked this

    Household Products' evaluations of Filterator X water filters have been

    This discusses the magazine's consistent negative evaluations, but it doesn't directly impact the spokesperson's claim that the filter is effective based on consumer satisfaction.

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