Research on the causes of schizophrenia strongly suggests that

A) there is a genetic predisposition to schizophrenia.
B) almost anybody will develop schizophrenia if exposed to extensive environmental stress.
C) schizophrenia patients suffer from a deficiency of the neurotransmitter serotonin.
D) if adopted children's adoptive parents have schizophrenia,they will,too.

Genetic Predisposition

A higher chance of getting a certain disease due to an individual's genetic composition.

Environmental Stress

Physical, chemical, and biological constraints on the productivity and vitality of living organisms due to environmental conditions.

Serotonin

A vital substance in the brain that helps balance emotions and enhance sensations of happiness and overall well-being.