What Is an Important Function of Organizations Such as the American

What is an important function of organizations such as the American Psychological Association,the American Psychological Society,and the American Medical Association?

A) They fund most of the treatment and prevention research done in the United States.
B) They draw up the policies that determine which clients get treatment and of what duration.
C) They set and maintain professional and ethical standards.
D) They control forensic issues such as the insanity defense and the policies for committing patients against their will.