Logical ReasoningDifficulty: Easy

PT119 S2 Q13 Explanation

Companies wishing to boost sales

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

TopicsNecessary Assumption

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Stimulus

Companies wishing to boost sales of merchandise should use in-store displays to catch customers’ attention. According to a marketing study, today’s busy shoppers have less time for coupon-clipping and pay little attention to direct-mail advertising; instead, decisions on the spot at the store.

What this question is testing

Necessary Assumption

Your task

Find the assumption the argument requires in order for its conclusion to hold.

Common trap

Answers that would help the argument but aren't strictly required (sufficient, not necessary).

Winning move

Negate each choice — the right one breaks the argument when negated.

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 is an assumption that the

Answer choices

  1. Out of Scope: increasingly using1% picked this

    Companies are increasingly using in-store displays to catch

    We don't care whether this plan represents a growing trend or whether the author is the first one to think of it. We're only concerned with whether or not it works at boosting sales. If we negated this and said, "companies are not increasingly using in-store displays", that doesn't weaken. It only weakens if we learn that in-store displays do not help boost sales of merchandise.

  2. Out of Scope: at one time5% picked this

    Coupons and direct-mail advertising were at one time more effective means of boosting sales of merchandise

    The author's argument has nothing to do with the past, so she hasn't committed to any ideas about whether coupons and direct-mail were once more effective than now. This answer has nothing to do with in-store displays, so it has nothing to do with the argument core we're supposed to be evaluating. We only care about answers that deal with this question: "Given that 2/3 of buying decisions are made at the store, would in-store displays succeed at catching customers' attention and thereby boosting sales of merchandise?"

  3. Irrelevant Comparison9% picked this

    In-store displays are more likely to influence buying decisions made on the spot at the store than to

    If we negated this and said "in-store displays are equally likely to influence on-the-spot buying decisions as they are to influence other buying decisions" that would sound like a big weakening idea for this plan.

  4. Correct85% picked this

    In-store displays that catch customers’ attention increase the likelihood that customers will decide on the spot to

    Why this is right

    This sounds pretty obvious, which is why some students don't like it, but this plan is certainly assuming that in-store displays that succeed in catching customers' attention will thereby increase the potential sales of merchandise to that customer. If we negate this and say, "In-store displays that catch consumers' attention do not increase the likelihood that the customers will decide on the spot to buy the company's merchandise", that sounds like a big weakening idea to the plan. The author is saying these in-store displays are a way to boost sales of merchandise, but if customers who notice them are no more likely to buy the company's merchandise, then the author sounds wrong. On Necessary Assumption, if the negation of an answer badly weakens the argument, then that answer is correct.

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

  5. Weakens1% picked this

    Many of today’s shoppers are too busy to pay careful attention

    This is written as an objection to the plan. "Hey, author -- your plan sounds bad. After all, many shoppers are not going to even look at the in-store displays. They're too busy." Authors are never assuming something that weakens them. They're assuming the opposite of something that weakens them.

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