Logical ReasoningDifficulty: Medium

PT120 S1 Q13 Explanation

All societies recognize certain rules

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

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Stimulus

All societies recognize certain rules to be so crucial that they define those rules as duties, such as rules restricting violence and those requiring the keeping of agreements. Contained in the notion of a duty is the idea that its fulfillment is so fundamental to a properly functioning society that persons obligated would be harmful to their self-interest. This shows that _______ .

What this question is testing

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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
13.

Which one of the following most reasonably completes

Answer choices

  1. Out of Scope: overrate benefits2% picked this

    all societies overrate the benefits of certain rules, such as those governing the

    We don't have any support for this opinionated, and judgmental tone of "all societies overestimate how beneficial certain rules are". The paragraph doesn't talk about the benefit of having certain rules or give us any reason to think it's less benefit than all societies think.

  2. Too Strong: all people incapable1% picked this

    all societies have certain rules that no people are capable

    Did we hear about any rule that "no person is capable of following"? Doesn't seem like it. We just heard about duties, such as refraining from violence or keeping an agreement. Do we have any reason to think that "no person is capable of refraining from violence or keeping an agreement"? The fact that duties can sometimes mean that people would have to go against their own self-interest might tempt us into thinking, "Oh, people won't want to go against their self-interest. Thus no person is capable of following this rule." But people are definitely capable of doing things that are harmful to their self-interest. They don't like doing it, but they're capable. And remember, this answer is not a single person is capable.

  3. Correct76% picked this

    all societies recognize the possibility of clashes between individual self-interest and the

    Why this is right

    This is certainly weird, but it's not new and not very strong. Since all societies have duties, and contained in the notion of duty is that you have to follow it, even if doing so would harm your self-interest, then all societies have a notion that you might have to choose (a clash) between self-interest and duty.

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

  4. Out of Scope: comparing duties20% picked this

    a properly functioning society will recognize that some duties take priority

    There's nothing in the argument that suggests that some duties outrank other ones. We were told that duties can outrank self-interest, but we never talked about one duty coming into conflict with another duty.

  5. Too Strong: societies have no right1% picked this

    societies have no right to expect people always to perform

    Similar to (A), this answer is imbued with a lot of judgmental opinion, but the background claims don't have any opinion at all. We're not allowed to speculate how someone might react to the background claims in an opinionated way. If we didn't read opinions in the stimulus, then we would (almost always) avoid opinions in the answers.

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