Logical ReasoningDifficulty: Hard

PT139 S4 Q19 Explanation

Professor: Economists argue

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

TopicsWeaken

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

Professor: Economists argue that buying lottery tickets is an unwise use of resources, because the average payoff for the tickets sold in a lottery is much lower than the cost of a ticket. But this reasoning is faulty. The average amount paid out on individual insurance policies is much lower than argue that purchasing insurance is an unwise use of resources.

What this question is testing

Weaken

Your task

Find the choice that makes the argument's conclusion less likely to be true.

Common trap

Answers that look negative but attack a claim the argument never relied on.

Winning move

Find the assumption the argument depends on, then pick the choice that undermines it.

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

The question
19.

Which one of the following, if true, most weakens the

Answer choices

  1. Strengthens, if Anything3% picked this

    Individuals spend, on average, much more on insurance than on

    If we're trying to argue that "insurance makes sense, lotto tickets don't", it certainly doesn't feel superficially helpful to hear "ya spend even more on insurance than lotto". This is a difference, but not a meaningful one. As stated in my example before, the average cost of an insurance policy might be $500 (vs. a $5 lotto ticket), but the average payout of the insurance policy is also much more, $75 vs. $2. All we know is that they are both a "losing bet" in the long run. We aren't told which one has a worse rate of losing money, but we would only care about the ratio of pay-in to pay-out (500/75 vs. 5/2). This answer is only saying that one has a bigger pay-in than the other (but if it also has a bigger average pay-out, it could still be the wiser investment).

  2. Strengthens, if Anything3% picked this

    Insurance companies generally retain a higher proportion of total revenue than do organizations

    This is essentially saying that insurance companies have a higher profit margin than do lotto sponsors. In other words, with insurance companies, they're keeping more of the money and expending less on payouts to their customers. That would make them a bigger losing bet than lotto tickets, so that goes the opposite of our desired direction: "insurance is fine, lotto is dumb".

  3. Strengthens5% picked this

    Taking small financial risks can often greatly increase one's chances of obtaining

    "Small financial risks for the chance of obtaining much larger benefits" sounds a lot like lotto tickets. This answer is saying something good about lotto tickets? No thanks.

  4. Term Shift: grand prize38% picked this

    In general, the odds of winning the grand prize in a lottery are significantly lower than the odds of collecting a settlement

    This is definitely the most tempting answer, because it feels like it points to a salient difference that makes lotto tickets sound worse: you're way less likely to get a payout! Having reached answer choice D without having made any friends along the way, this is definitely an answer I would hold. The problem is, this answer is talking about the grand prize. The professor's argument is about the average payout. If this answer said the odds of winning any prize in lotto are way lower than the odds of getting an insurance settlement, that would be a meaningful difference that would disrupt the professor's analogy and I'd be much more inclined to pick it. But as written, this just establishes that you're less like to win the biggest prize than to get an insurance settlement. It's still possible, in this case, that the odds of winning something meaningful are as good as the odds of getting some insurance settlement, so it doesn't have a particularly strong impact on the argument.

  5. Correct52% picked this

    The protection against loss that insurance provides is more important to one's well-being than is the possibility

    Why this is right

    This gets at a meaningful difference that allows us to argue that insurance is good, lotto is dumb. Insurance is important because it can help you avoid catastrophic economic losses that could ruin your life and hurdle you into bankruptcy. Lotto is a luxury that might give you a more comfortable standard of living, but in almost all cases will just lead to you losing your money. This has a stronger impact on the argument than our other contender, D, because D is too narrowly focused on the grand prize, not lotto payouts in general.

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

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