Which is the correct interpretation of the data linking physical activity and cognitive function?
A. Increased physical activity causes increases in cognitive function.
B. There is a direct dose-response relationship between cognitive function and physical fitness.
C. Regular exercise will cause a delay in the decline of memory function.
D. Data indicate a positive association between physical activity and various measures of cognitive function.
Answer: D
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Fill in the blank(s) with the appropriate word(s).
A physician who specializes in the study of the skin is a:
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