Schizophrenia Is Defined as A(n)

Schizophrenia is defined as a(n) :

A) psychological disorder alternating between extremely high moods and extremely low moods.
B) psychological disorder in which a person exhibits two or more distinct personalities.
C) inability to recall important information from one's past, often triggered by a stressful event.
D) severe disorder in which a person exhibits bizarre disturbances in thinking, perception, feelings, and behavior.