1-44Ian Was Predisposed to Being Very Aggressive with His Peers

1-44.Ian was predisposed to being very aggressive with his peers in school,who responded by rejecting him.Later in life Ian began to associate with other aggressive youth and to participate in a variety of delinquent behaviors.This is an example of

A) phenotypic vulnerability to aggression.
B) a phenotypic diathesis.
C) polygenic expression.
D) the way the genotype may shape the phenotype.