Your Text Emphasizes That One's Physical Health and Illness Is

Your text emphasizes that one's physical health and illness is influenced by a complex array of psychological,biological,and social factors.Which of your text's unifying themes does this reality illustrate

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