It has been suggested that men in many cultures tend to marry women younger than themselves because men are genetically predisposed to seek female features associated with youthful fertility. This suggestion BEST illustrates:a. social learning theory.
b. behavior genetics.
c. Freudian psychology.
d. an evolutionary perspective.

This suggestion BEST illustrates: an evolutionary perspective.

Explanation:

It has been observed that older men tend to marry younger women and women prefer to marry older and taller men. This could be thought of as a evolutionary perspective because by selecting such mates they make them socially more fit. Because when men marry younger women they tend to stick to the single relationship as per their psychological nature. Again when women marry older men they ensure their safety.

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

the answer is d.) homologous; have mammary glands