Mathematics, 05.05.2020 13:04 cdxxc9324

Does regular exercise decrease the risk of cancer? A researcher finds 200
women over 50 who exercise regularly, pairs each with a woman who has a
similar medical history but does not exercise, then follows the subjects for 10
years to see which group develops more cancer. This is a *
A-survey
B-retrospective study
C-prospective study
D-randomized experiment

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Does regular exercise decrease the risk of cancer? A researcher finds 200
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