Multiple Choice
A researcher identified 100 men over forty who were not exercising and another 100 men over forty with similar medical histories who were exercising regularly.She followed all the men for several years to see if there was any difference between the two groups in the rate of heart attacks.This is a(n) ________________________ .
A) retrospective study
B) matched pairs experiment
C) randomized experiment
D) survey
E) prospective study
Correct Answer:
Verified
Correct Answer:
Verified
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