Logical ReasoningDifficulty: Medium

PT9 S4 Q7 Explanation

The incidence in Japan

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

TopicsMost Supported

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 incidence in Japan of most types of cancer is remarkably low compared to that in North America, especially considering that Japan has a modern life-style, industrial pollution included. The cancer rates, however, for Japanese people who immigrate to North America and the higher cancer rates prevalent in North America.

What this question is testing

Most Supported

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
7.

If the statements above are true, they provide the most support for which one

Answer choices

  1. Contradicted2% picked this

    The greater the level of industrial pollution in a country, the higher that country’s cancer rate

    This contradicts the facts about Japan: there's pollution over there like there is in North America but the cancer rates are lower.

  2. Unsupported Comparison2% picked this

    The stress of life in North America is greater than that of life in Japan

    If this was a Paradox question, B could be a right answer. It points out a difference between the Japanese in Japan and Japanese Immigrants and connects that to cancer rates. The problem with B is that this is a Most Supported question, and we don't have any info suggesting that life in America is more stressful. The causal difference maker suggested by the facts is diet.

  3. Unsupported Causal Relationship2% picked this

    The staple foods of the Japanese diet contain elements that

    This is a tempting one because it addresses our diet prediction. But our prediction was that the SAD diet in America causes cancer. Is the claim that the Japanese diet cures cancer equally well supported? While it may seem like opposite sides of the same coin, our facts are dealing with the incidence of cancer: as in, how often does cancer show up? We're told that it shows up way less in Japan. If the diet cured cancer, it would still show up. So a diet that cures cancer actually isn't well supported by a low incidence of cancer. This answer would be correct if it said that the Japanese diet prevented cancer.

  4. Correct72% picked this

    The relatively low rate of cancer among people in Japan does not result from a high frequency of a protective

    Why this is right

    Wow, this does not match our prediction at all. It's a great reminder that Most Supported questions aren't always predictable, and we need to read each answer with an open mind. We should be drawn to the ruling out language of D: it's something a lot of correct Most Supported answers share. So do our facts support that the low cancer in Japan is not genetic? Definitely. Our facts told us that when the Japanese immigrate and start eating burgers and donuts, they get cancer at similar rates as North Americans. If it was genetic, it would persist no matter where a person was living.

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

  5. Too Specific (fats)22% picked this

    The higher cancer rates of Japanese immigrants to North America are caused by fats in

    If this answer was just about the diet on the whole, it would be a well supported answer. But while the facts support that the diet is to blame, they don't support any specific component of the diet being responsible.

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