hard · GMAT Verbal
A nutritionist claims dietary cholesterol, not saturated fat, drives high blood cholesterol. Her evidence: people who switched from eating eggs daily to eating none saw their blood cholesterol fall. She concludes that limiting cholesterol-rich foods is the key to lowering blood cholesterol.
The answer to which of the following questions would be most useful in evaluating the nutritionist's conclusion?
- Did the people who stopped eating eggs find low-cholesterol meals less satisfying?
- When the people stopped eating eggs, did they also reduce their intake of saturated fat?
- Is blood cholesterol associated with a higher risk of heart disease?
- Do eggs contain more dietary cholesterol than most other commonly eaten foods?
- Did the people who stopped eating eggs lose weight over the study period?
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