Men and women are most likely to differ in their

A) happiness.
B) intelligence.
C) self-esteem.
D) aggressiveness.

Research suggests that men tend to be more aggressive than women. While there may be individual differences and exceptions, overall, men exhibit more physical aggression, whereas women may exhibit more relational or verbal aggression. The other options (happiness, intelligence, self-esteem) may show some differences between genders, but not to the same degree as aggression.