Mrs. Symmes is the principal of a middle school. In addressing the PTA, she tells the parents that the school is only one influence on adolescent development. She stresses that parents, peers, and the community all influence adolescent development. Mrs. Symmes's view would be MOST likely to be shared by which of the following theorists?
A. Lev Vygotsky
B. Albert Bandura
C. Jean Piaget
D. Robert Sternberg