Answer:
In early adulthood (ages 20–40), our physical abilities are at their peak, including muscle strength, reaction time, sensory abilities, and cardiac functioning. The aging process also begins during early adulthood and is characterized by changes in skin, vision, and reproductive capability.
Explanation:
Well it does not matter what time of the day it is, so it is not A. I think that that B is a possible answer but I think that it depends on the person. I think C makes the most sense so far so lets read the last one to make sure. I don't think it matters what exercise is being performed so it is not D. So after observing the question, The best answer would be C.
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