Community Psychologists Have Designed Prevention Programs for a Variety of Problem

Community psychologists have designed prevention programs for a variety of problem behaviors, from aggression and suicide to eating disorders. One general conclusion that can be drawn from these efforts so far is

A) prevention programs for these types of problem behaviors almost always succeed, as a society we just need to care enough to try.
B) these prevention programs have been highly successful, although the psychological mechanisms of change are not always the predicted ones.
C) many of these prevention programs have not been shown to be effective; we need to rely on research rather than people's good intentions in evaluating these programs.
D) programs to prevent aggressive behavior and suicide have been more successful than programs to prevent eating disorders, although we do not know the reasons why.