medium · GMAT Verbal Reasoning
A health study concluded that regular apple consumption reduces cholesterol because participants who ate an apple daily had lower cholesterol than those who did not.
Which of the following is an assumption required by the argument?
- Every single participant enrolled in the study had a documented family history of chronically high cholesterol before it began.
- The daily apple-eaters did not also differ from the others in other heart-healthy habits that could account for their lower cholesterol.
- Each daily apple-eating participant accurately reported the precise number of apples consumed to the researchers throughout the entire study period.
- Apples are the only fruit in all of nature that is biologically capable of producing any measurable reduction in human cholesterol levels.
- Eating an apple each day lowers a person's cholesterol more effectively than any leading prescription medication on the market does.
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