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A recent study of college students shows that, contrary to

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A recent study of college students shows that, contrary to

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A recent study of college students shows that, contrary to predicted results, special nutritional planning does not positively affect students’ grades. Sixty students, half of whom were given a nutritionally balanced diet, had grades no higher than did those students who were not placed on the diet plan.

Which of the following, if true, is most useful in determining the accuracy of the study described above?


(A) Performance of business executives was shown to improve drastically after major alterations were made in their diets.

(B) Honors students, after altering their diets, maintained that they did not change their study habits.

(C) Students who participated in various fitness regimens found that their grades improved appreciably after they altered their exercise habits.

(D) High school students who previously had low grades found that after they altered their diets, their grades improved dramatically.

(E) All of the college students who volunteered for the study were either in their first or second year of college.

OA D

Source: Princeton Review

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Option A - Incorrect
The performance of business executives based on alterations to their diet isn't the main concern of this argument, so this cannot serve as the most useful information in determining the accuracy of the study.

Option B - correct
This is quite useful in determining the accuracy of this argument because, if true that honour students, after altering their diets, maintained their reading habits, then it shows that their grades did not change and is in support of the argument.

Option C - Incorrect
The argument is not concerned with fitness regimens and exercising habits, so this option cannot determine the accuracy of the argument.

Option D - Incorrect
The argument claims that, students placed on special nutritional planning do not perform higher than those who are not on the plan,wwhile this option claims that students who had low grades improved dramatically after being placed in a diet. This shows opposition and cannot determine the accuracy of the argument due to this.

Option E - Incorrect
The argument isn't concerned with the various levels of the students who volunteered for the study.

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