North Americans Are Less Concerned About Enemies Than West Africans

North Americans are less concerned about enemies than West Africans.Why is this?

A) Since violent crime rates are lower in North America than in West Africa, North Americans do not need to worry about people harming them.
B) North Americans are less competitive than West Africans, so it is less likely that a North American will make enemies with people they beat in competitions.
C) North Americans view relationships in terms of choice more than West Africans; consequently, North Americans can more easily distance themselves from someone they dislike or who dislikes them.
D) The individualistic emphasis on autonomy in North American cultures makes North Americans less socially sensitive and consequently less likely than West Africans to realize they have enemies.
E) Compared to West Africans, North Americans are more motivated to understand their enemies and potentially turn them into friends; consequently, North Americans view their enemies as more interesting than threatening.