The answer is c. loss of gray matter that spreads in waves into their early twenties.
Schizophrenia
Schizophrenia is a serious mental disorder that affects a person’s behavior, thinking and emotion. It may result in some combination of hallucinations, delusions, and extremely disordered thinking and behavior that affects daily functioning. It can often be a lifelong struggle. Schizophrenia commonly strikes between the ages of 16 and 30, and males tend to show symptoms at a slightly younger age than females.