Schizophrenia is a complex disorder in which both and play important roles.

The answer in the spaces provided are; dopamine and glutamine because both of these have played an important role with schizophrenia in which is a complex disorder. The dopamine is the one responsible for acting as a neurotransmitter of the brain while the glutamine is composed of amino acids in which are helpful because they are the building blocks of the protein needed by the body.

the answer your looking for is c. : )