Multiple Choice
To study the effects of cigarette smoking on breast cancer, 500 healthy teenaged girls were recruited to participate in a study that tracked their smoking (or nonsmoking) behavior and cancer incidence for five decades. This is an example of
A) a prospective study.
B) an experiment.
C) a retrospective study.
D) a single-subject approach.
Correct Answer:
Verified
Correct Answer:
Verified
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