Researchers are learning that schizophrenia is usually the result ofa. genetic mutationsb. environmental triggersc. genetic predisposition along with an environmental triggerd. none of the above

(C) genetic predisposition along with an environmental trigger.

Explanation:

We inherit our genes from both parents. Scientists believe several genes are associated with an increased risk of schizophrenia, but that no gene causes the disease by itself. In fact, recent research has found that people with schizophrenia tend to have higher rates of rare genetic mutations and it probably disrupts brain development.

Scientists think interactions between genes and the environment may be a reasoning for schizophrenia to develop. Many environmental factors may be involved, such as exposure to viruses or malnutrition before birth, problems during birth, and other not yet known factors.

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-lavira: )