The producers of a popular teenage reality show decide to portray the characters engaging in healthy behaviors in hopes that young viewers will benefit from emulating their favorite characters. This is an example of:

Entertainment education

Explanation:

Entertainment education refers to a transmission approach which aims to educate and relieve a social problem or controversy in order to produce social change. It consists of adjustments which are introduced within a particular entertaining system, such soap operas and written publications. As a result, in the case given, the producers intend to cause young viewers to engage in healthy behaviors by introducing characters that they can imitate and look up to.