While Freud Might Explain an Individual's Depression by Focusing on the Person's

While Freud might explain an individual's depression by focusing on the person's unconscious thoughts,a physiological psychologist might focus instead on a chemical imbalance in the brain.This difference in explanations BEST illustrates the text's unifying theme of

A) psychology evolves in a sociohistorical context.
B) heredity and environment jointly influence behavior.
C) psychology is theoretically diverse.
D) psychology is empirical.