Psychology began with an interest in the study of consciousness,then consciousness was ignored by behaviourists,then consciousness became an interesting topic again in the 1960s.Which unifying theme in psychology reflects this pattern of study

A)  Psychology evolves in a sociohistorical context. 
B)  Behaviour is determined by multiple causes. 
C)  Behaviour is shaped by cultural heritage. 
D)  People's experience of the world is highly subjective.