Jessica and Nick Are Behavioral Researchers

Jessica and Nick are behavioral researchers. Jessica believes that her sons have been aggressive from birth because she and her husband Nick have inborn aggressive tendencies. Nick, however, believes that their sons are aggressive because throughout history, it has been adaptive for men to be aggressive so that they can protect their territory and possessions. Nick's beliefs reflect the influence of ____, whereas Jessica's beliefs reflect ____.

A) behavioral genetics; multicultural psychology
B) multicultural psychology; cross-cultural psychology
C) cross-cultural research; evolutionary psychology research
D) evolutionary psychology; behavioral genetics