Practice Quiz

LSAT

Category - Logical Reasoning

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Many skin cancer patients were found to have used a certain kind of sun protection cream. A lab researcher decided to experiment by using the cream, and after six months, also developed skin cancer. The researcher concluded that the cream caused skin cancer.

Which of the following, if true, most supports the conclusion reached by the researcher?
  1. The researcher did not develop any other illnesses after using the cream.
  2. The researcher has a good reputation within his field.
  3. There is no evidence that the cream results in cancer for laboratory animals.
  4. Many sufferers of skin cancer also suffer from other health problems.
  5. The researcher also conducted a study of 1,000 people without skin cancer, and found that none of them had ever used the cream.
Explanation
Answer: E - If the researcher conducted a study of 1,000 people without skin cancer, and found that none of them had ever used the cream, this would support his conclusion that the cream causes skin cancer. Answer E is the only answer that supports the researcher’s conclusion. The other answers are irrelevant to the researcher’s conclusion.
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