Logical ReasoningDifficulty: Hard

PT113 S4 Q20 Explanation

The desire for praise is

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

TopicsSufficient Assumption

Keep going in LSAT Lab

  • Save & drill this skill build targeted practice sets from questions like this one

  • Video walkthroughs watch every question solved step by step

  • 81 official LSATs as questions, timed sections & full-length tests

Full official LSAT questions are available through LawHub. This page provides LSAT Lab's explanation, strategy, and review tools without republishing the full official question.

Stimulus

The desire for praise is the desire to obtain, as a sign that one is good, the favorable opinions of others. But because people merit praise only for those actions motivated by a desire to help others, it follows that one who for praise does not deserve praise for that aid.

What this question is testing

Sufficient Assumption

Your task

Find the assumption that, if added, guarantees the conclusion follows.

Common trap

Answers that only partly bridge the gap, leaving the conclusion unproven.

Winning move

Identify the new term in the conclusion and pick the choice that links it to the evidence.

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

The question
20.

Which one of the following, if assumed, enables the conclusion of the argument to

Answer choices

  1. Correct62% picked this

    An action that is motivated by a desire for the favorable opinion of others cannot also be motivated by

    Why this is right

    This is worth considering, since it's landing where we want to end up: "not motivated by a desire to help others". It says motivated by desire for ? not motivated by favorable opinion of others desire to help others We're trying to prove that people who aid others primarily seeking praise don't deserve praise. Are people who aid others primarily out of a desire for praise people who would trigger this rule? Are they motivated by a desire for the favorable opinion of others? Yes! Praise = favorable opinion of others, so people aiding others primarily out of a desire for praise are desiring the favorable opinion of others. According to this answer, those people are not motivated by a desire to help others. And according to the rule the premise provided, if you're not motivated by a desire to help others, then you don't deserve praise. CONCLUSION aiding others don't primarily out of ----------------------------> deserve desire 4 praise praise EVIDENCE not motiv don't by desire to ---> deserve help others praise THIS ANSWER aiding others by not motiv desire for [praise] -------> by desire to help others

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

  2. Bad Trigger Match22% picked this

    No action is worthy of praise if it is motivated solely by a

    This answer puts conclusion language on the right side of the arrow, which is generally desirable. However, in this argument we already have a way to prove the conclusion; we just have to establish that someone isn't motivated by a desire to help others. So in this case, seeing the conclusion's wording again would warn us this isn't the right answer. But functionally this answer could still work (it wouldn't use the Premise, which would be unprecedented for a correct answer, but it could still satisfy the task of the question stem). We would just need to know that the Trigger applies. Are people "who aid primarily out of a desire for praise" people who are "motivated solely by a desire for praise"? No. Since the people our conclusion is talking about are only primarily motivated by praise, we can't say this rule about people are motivated solely by praise would apply to them.

  3. Trap2% picked this

    People who are indifferent to the welfare of others do not

    Bad Trigger Match Repeats What We Know This answer puts conclusion language on the right side of the arrow, which is generally desirable. However, in this argument we already have a way to prove the conclusion: we just have to establish that someone isn't motivated by a desire to help others. In a sense, this answer is actually just regurgitating the rule we were already given. not motivated by don't desire to help others ? deserve (i.e. indifferent to the praise welfare of others) We would never pick an answer that repeats something we already know. But functionally this answer could still work. We would just need to know that the Trigger applies. Are people "who aid primarily out of a desire for praise" people who are "indifferent to the welfare of others?" We have no idea. We wouldn't be able to assume that this rule about people who are indifferent to the welfare of others applies to people who aid primarily out of a desire for praise.

  4. Bad Trigger Match2% picked this

    One deserves praise for advancing one’s own interests only if one also advances the

    This answer puts conclusion language on the right side of the arrow, which is generally desirable. However, in this argument we already have a way to prove "don't deserve praise"; we just have to establish that someone isn't motivated by a desire to help others. So in this case, seeing the conclusion's wording again would warn us this isn't the right answer. But functionally this answer could still work. We would just need to know that the Trigger applies. Are people "who aid primarily out of a desire for praise" people who are "not advancing the interests of others? We don't know. People who help primarily for praise may still be advancing the interests of others. We don't know if this rule about "people who don't advance the interests of others" would apply to "people who aid primarily out of a desire for praise".

  5. Unclear Impact13% picked this

    It is the motives rather than the consequences of one’s actions that determine whether one

    We were already given a rule that says not motivated by desire ? don't deserve to help others praise So we already knew that motivation was important in terms of assessing who does or doesn't deserve praise. But does this answer specify which motives don't deserve praise? No. So it won't enable us to prove that a certain group of people don't deserve praise. We have no way to apply this rule in any clear way to "people who aid primarily out of a desire for praise" and thus derive that "they don't deserve praise". We already know what would prove that someone doesn't deserve praise: establishing that they were not motivated by a desire to help others. This answer does nothing to convince us that "people who aid primarily for praise are not motivated by a desire to help others".

Continue the review in LSAT Lab

Save this question, watch the video walkthrough, and drill similar questions in your LSAT Lab account.

LSAT Lab

Turn this review into a targeted study plan.

Save this question, drill more like it, watch the video walkthrough, and track your progress in your LSAT Lab account.

Start practicing free