Reading Comprehension (RC) | Frazier and Mosteller assert that medical research could be improved b

2. Which of the following can be inferred from the passage about a study of the category of patients referred to in lines 20 - 22[Often researchers restrict study participation to patients who have no ailments besides those being studied.] ?

(A) Its findings might have limited applicability.

(B) It would be prohibitively expensive in its attempt to create ideal conditions.

(C) It would be the best way to sample the total population of potential patients.

(D) It would allow researchers to limit
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