What Major Difference Between Males and Females Is Thought to Be

What major difference between males and females is thought to be at the root of sex differences in jealousy, according to some evolutionary theorists (e.g., Buss et al., 1992) ?

A) Females typically begin puberty earlier than males
B) Females go through menopause while males do not
C) Males can be cuckolded while females need a mate who will reliably support and protect offspring
D) Males tend to be stronger than females, while females tend to be more social