Biff works out for hours on end since he knows that women like muscular guys. He is reacting to the selection pressure exerted by human females on males.

Question

Quizplus · Accepted Answer

Intersexual selection refers to the choice of a mate where typically one sex (often females) exerts selective pressure on the other sex, leading to traits that are found attractive by the selecting sex. In this case, Biff is responding to perceived preferences of females, which is an example of intersexual selection.

Biff Works Out for Hours on End Since He Knows