According to the Textbook, a Good Deal of Adolescents' Risk

According to the textbook, a good deal of adolescents' risk taking takes place in contexts in which

A) they are unsupervised by adults and exposed to peers who encourage risky behaviors.
B) older, opposite-sex peers are present and monitoring their behavior.
C) they are in a new, exciting environment where formerly daunting challenges seem easy.
D) they are on their own, with no input from peers or adults.