Which of the Following Statements Best Captures the Current Understanding

Which of the following statements best captures the current understanding of the etiology of mental illness?

A) The role of "nurture," experiences, and relationships has been largely disproven.
B) Mental illness can be attributed to organic brain changes and pathophysiological processes.
C) Mental illness exists from the interplay of biologic factors and psychosocial influences.
D) Current understanding of mental illness has shown that both biologic psychiatry and psychosocial psychiatry are incorrect.