Which unifying theme in psychology is reflected by learned preferences for foods and display rules concerning the expression of emotion

A)  Psychology is theoretically diverse. 
B)  Psychology evolves in a sociohistorical context. 
C)  Behaviour is shaped by cultural heritage. 
D)  Behaviour is determined by multiple causes.

Cultural Heritage

The legacy of physical artifacts and intangible attributes of a group or society passed down from generation to generation, including traditions, languages, practices, and objects.

Learned Preferences

Preferences or tastes developed over time through experience or exposure, as opposed to innate preferences.

Display Rules

Culturally determined norms that dictate the appropriate expressions of emotions in various social situations.