In Your Text,we Saw That Schizophrenia May Be a Function

In your text,we saw that schizophrenia may be a function of abnormalities in neurotransmitter activity,structural defects in the brain,and genetic vulnerability.Which unifying theme of your text do these findings support

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