Logical ReasoningDifficulty: Easy

PT121 S4 Q1 Explanation

While 65 percent of the

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

TopicsMain Conclusion

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Stimulus

While 65 percent of the eligible voters who were recently polled favor Perkins over Samuels in the coming election, the results of that poll are dubious because it was not based on a representative sample. Given that Perkins predominantly advocates the interests of the upper-middle class and malls, it is quite probable that Perkins’s supporters were overrepresented.

What this question is testing

Main Conclusion

Your task

Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.

Common trap

Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.

Winning move

Predict what a right answer must do, then test each choice against the conclusion-evidence gap.

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

The question
1.

Which one of the following statements most accurately expresses the main conclusion

Answer choices

  1. Too Strong / Unrelated to Goal6% picked this

    The poll was intentionally designed to favor Perkins

    This answer implies intentional design to favor Perkins, a claim not made in the argument. The conclusion is about the results of the poll, whereas this answer doesn't address the results of the poll. And the argument questions the poll's accuracy due to the sampling methodology, not deliberate bias.

  2. Opposing Idea / Unrelated to Goal3% picked this

    Samuels’s supporters believe that they were probably not adequately represented in

    This answer presumes to speak for Samuels's supporters, which the argument does not do. The argument focuses on questioning the poll's accuracy due to its sampling method, not on what Samuels's supporters might think.

  3. Correct88% picked this

    The poll’s results probably do not accurately represent the opinions of the voters in

    Why this is right

    This accurately captures the main conclusion about the poll's legitimacy. If we're saying that the result of a poll are dubious, we're saying "we can't trust that what the poll says is an accurate reflection of reality".

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

  4. Inference-Bait / Unrelated to Goal0% picked this

    Samuels is quite likely to have a good chance of winning

    This tries to go one step farther than the conclusion: "If the author thinks the poll that favors Perkins had dubious results, she must think that Perkins isn't actually favored to win the election, so Samuels must be." We're not being asked to figure out what the author might say "next". We need to just match the actual conclusion: "the poll results are dubious". This answer isn't about poll results, so it can't be a match.

  5. Unstated / Inference-Bait3% picked this

    Those who designed the poll should have considered more carefully where to

    This doesn't look anything like "the poll results are dubious". Since it's not a claim about the poll results, it can't match our conclusion. This is designed to read the author's mind and say something else she'd probably believe. Since she believes the poll was not representative based on where it was conducted, she might presumably say that "the pollsters should have thought more about conducting this in a place that didn't skew towards Perkins". Main Conclusion isn't about invisible ideas. It's about matching the visible conclusion.

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