Of the numerous hypotheses that have been proposed to explain the depression-reducing effects of exercise, which is based on the idea that humans have a genetic predisposition to be physically active?

Anthropological hypothesis .

Explanation:

Depression may be defined as the medical condition in which the individual loses the interest of participating in any social activities and has depress mood. The individual more enjoy the loneliness.

According to the anthropological hypothesis, the ways by which depression can be reduced be known. The depression might also result in the decrease in the reduce effect of the exercise. The individual might also have already have in their genes to become physically active.

Thus, the answer is anthropological hypothesis.