In Order for Structured Activities for Adolescents to Be Effective

In order for structured activities for adolescents to be effective in reducing deviant behavior, it is important that

A) the activities be competitive ones that push the adolescent to excel.
B) all activities are mixed-gender activities.
C) the activities occur after school when teens would otherwise be hanging out with friends outside of adult supervision.
D) the activities bring together adolescents from a variety of backgrounds and with different levels of experience.