Logical ReasoningDifficulty: Medium

PT138 S4 Q25 Explanation

A law is successful primarily

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

TopicsMethod

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Stimulus

A law is successful primarily because the behavior it prescribes has attained the status of custom. Just as manners are observed not because of sanctions attached to them but because, through repetition, contrary behavior becomes unthinkable, so societal laws are obeyed not because the behavior is ethically otherwise, but because to act otherwise would be uncustomary.

What this question is testing

Method

Your task

Describe how the argument proceeds — the technique it uses to reach its conclusion.

Common trap

Answers that describe a method the argument doesn't actually use.

Winning move

Track the role each statement plays, then match that to the choice describing the same moves.

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.

Which one of the following comparisons is utilized by

Answer choices

  1. Not the Right Similarity4% picked this

    As with manners and other customs, laws vary from society

    This is making the correct comparison, between manners and laws, but the similarity is that they are both obeyed mainly because through customary behavior, behaving contrary to them feels unthinkable. The similarity was not that both things vary from society to society.

  2. Too Strong11% picked this

    As with manners, the primary basis for a society to consider when adopting a

    Too Strong: primary basis Not the Right Similarity This is comparing manners and law, but it's saying that the intended similarity is .. for both things, the primary reason for considering whether to adopt it is custom. The argument was saying for both things, the reason that people follow them is custom.

  3. Correct78% picked this

    As with manners, the main factor accounting for compliance with laws

    Why this is right

    This is comparing manners and laws, saying that for both things, the main reason people comply with them is custom. The argument said that "manners are observed because through repetition (custom), contrary behavior becomes unthinkable", and "laws are obeyed because acting otherwise would be uncustomary".

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

  4. Not the Right Similarity5% picked this

    As with manners, most laws do not prescribe behavior that is

    The author never gets as specific as most laws. And it seems like she probably believes that most laws are ethically required. The author seems to be acknowledging that laws are ethically required, and that laws do come with penalties if you break them. She is just saying that those two things are not the primary reason why laws are followed; the inertia of abiding by them makes breaking them feel too uncustomary.

  5. Not the Right Similarity2% picked this

    As with manners, most laws do not have strict penalties awaiting those

    This is almost identical to (D). The author never gets as specific as most laws. And it seems like she probably believes that most laws do have penalties awaiting those who transgress. She never gets as specific as to say whether those penalties are strict. The author seems to be acknowledging that laws are ethically required, and that laws do come with penalties if you break them. She is just saying that those two things are not the primary reason why laws are followed; the customary habit of following the law is the reason they're followed.

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