Final answer:
Family, peers, and genetics are important in influencing adolescents' behavior.
Step-by-step explanation:
Researchers have determined that family, peers, and genetics are important factors that influence adolescents' behavior.
While genetics can play a role in shaping behavior tendencies, family environment and relationships as well as peer influence also have significant impacts on the choices and actions of adolescents.
For example, studies have shown that parents and other caring adults in a teen's life are often the greatest influences on their behavior, especially when it comes to sexual behavior.
However, as adolescents grow older, they may spend more time with their peers and be influenced by their behaviors and choices to fit in with the group.