If Jodi and Jerry,parents of Three Teens,would Like to Decrease

If Jodi and Jerry,parents of three teens,would like to decrease the likelihood of juvenile delinquency among their children,they should:

A) monitor their children's routines and behavioral patterns.
B) sometimes be tough and sometimes be lenient with their children.
C) give their children complete freedom to learn to behave independently.
D) harshly discipline their kids at 8 to 10 years of age.