Final answer:
MPD/DID is Dissociative Identity Disorder, while schizophrenia is a psychotic disorder.
Step-by-step explanation:
MPD/DID, also known as Dissociative Identity Disorder, is a mental disorder characterized by the presence of two or more distinct identities or personality states. Schizophrenia, on the other hand, is a psychotic disorder that involves a range of symptoms including hallucinations, delusions, and problems with thinking and social functioning.
So, the correct answer is c) MPD is Dissociative Identity Disorder, while schizophrenia is a psychotic disorder.