Fernando's parents are very worried about him. In the last month, he has withdrawn from contact with friends and lost interest in any outside activities. There has been a breakdown of his hygiene and personal habits, and he has not been going to his college classes or his part-time job. His brother who went to see him said that his thinking and speech were "jumbled" and his emotions ranged from

blunted to totally inappropriate. His brother immediately insisted that Fernando go with him to a psychologist, who will most likely diagnose Fernando with

a. a conversion disorder.
b. obsessive-compulsive disorder.
c. multiple personalities.
d. schizophrenia.

D