Evaluations of the Efficacy of Mass Media Health Appeals Suggest

Evaluations of the efficacy of mass media health appeals suggest that

A) messages are often too concrete and specific, and thus it is difficult to glean useful information from mass media appeals.
B) including specific recommendations about health-related behaviors diminishes individual perceptions of self-efficacy.
C) mass media messages are unrelated to shifts in cultural climate.
D) media appeals are often important sources of information for alerting the public to unknown health risks.