Answer: This is an example of ENTERTAINMENT EDUCATION.
Explanation: ENTERTAINMENT EDUCATION can be defined as a research-based communication strategy that is designed to give enjoyment, amusement, or relaxation while imparting knowledge, skill, facts, ideas and judgment.
This is made possible through a custom-tailored piece of entertainment like in the question where the producers of a popular teenage soap opera decide to portray the characters engaging in healthy behaviors so as to encourage viewers to learn.