Logical ReasoningDifficulty: Hard

PT103 S3 Q22 Explanation

If the statements in the passage

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

TopicsMust be True

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Stimulus

Whenever she considers voting in an election to select one candidate for a position and there is at least one issue important to her, Kay uses the following principle in choosing which course of action to take: it is acceptable for me to vote for a candidate whose opinions differ from mine is only one issue important to Kay, and only Medina shares her opinion on that issue.

What this question is testing

Must be True

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
22.

If the statements in the passage are true, which one of the following must also be true about Kay’s course of action in any election to select

Answer choices

  1. Out of Scope: no important issues9% picked this

    If there are no issues important to her, it is unacceptable for her to vote for any

    The only unacceptable action we were told about was voting for a candidate who disagreed with her on at least one important issue. We weren't told any rules that would govern her behavior when there are no important issues to her.

  2. Out of Scope6% picked this

    If she agrees with each of the candidates on most of the issues important to her, it is unacceptable for her to vote

    Out of Scope: agrees on most issues The only unacceptable action we were told about was voting for a candidate who disagreed with her on at least one important issue. We weren't told any rules that would govern her behavior when she agrees with all the candidates on most issues. Most = more than half, but it doesn't guarantee it's less than 100%. So when this answer says, "She agrees with each candidate on most important issues", that might still mean she agrees with them on all (since "all issues" are "more than half of the issues"). Thus, it's not clear from "agrees with most" whether she would disagree with them on some important issues. And then even if we knew she agreed with all the candidates on "most, but not all" the important issues, we'd still need more precise info about how many important issues she disagreed with, for each candidate. After all, her voting rules are about precisely comparing the number of important issues where she conflicts with each candidate.

  3. Too Strong5% picked this

    If she agrees with a particular candidate on only one issue important to her, it is unacceptable for her

    The only unacceptable action we were told about was voting for a candidate who disagreed with her on at least one important issue. This answer is saying, "she only agrees with them on one important issue". Does that mean that she disagrees with them on at least one important issue? No, because as this paragraph revealed, she might have only one important issue in a given election. If, like in the upcoming election, she has only one important issue, and Candidate X agrees with her on that issue, this answer is saying it's unacceptable for her to vote for X. That doesn't make any sense.

  4. Correct54% picked this

    If she disagrees with each of the candidates on exactly three issues important to her, it is unacceptable for her to vote

    Why this is right

    She's only allowed to vote for someone who disagrees with her on one or more important issue if she disagrees with all the other candidates on a greater number of important issues. In order for Kay to consider it acceptable to vote for someone whom she disagrees with on 3 important issues, it would have to be the case that she disagrees with all the other candidates on at least 4 important issues. But since that isn't the case in this election being described, it's unacceptable for her to vote for any of the candidates.

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

  5. Out of Scope27% picked this

    If there are more issues important to her on which she disagrees with a particular candidate than there are such issues on which she

    Out of Scope: # of disagree vs. agree The only unacceptable action we were told about was voting for a candidate who disagreed with her on at least one important issue, when it isn't the case that all other candidates disagree on even more important issues. So say there are 10 important issues to her. She and candidate X disagree on 6 of them, agree on 4 of them. Is she allowed to vote for candidate X? According to this answer choice, no. According to the paragraph, yes, as long as she disagrees with all the other candidates on at least 7 of her important issues.

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