Professor Langley emphasizes that premature sexual activity among high school students involves the interplay of alcohol consumption,mass media norms,and teens' underestimation of their vulnerability to sexually transmitted infections. The professor's emphasis best illustrates

A) the evolutionary perspective.
B) drive-reduction theory.
C) a biopsychosocial approach.
D) the sexual response cycle.

The professor's emphasis on premature sexual activity involving multiple factors such as alcohol consumption, mass media norms, and teens' underestimation of their vulnerability to sexually transmitted infections demonstrates the biopsychosocial approach, which considers biological, psychological, and social factors in understanding human behavior. This approach acknowledges that a person's behavior is influenced by multiple factors, rather than a single factor or theory.