Which illustrates tertiary prevention for child maltreatment?

A) identifying a parent in a stressful situation and providing resources to assist him or her
B) offering free parenting classes to high-risk populations
C) providing psychotherapy to a someone who has been abused
D) building Boys and Girls Clubs in low-income neighborhoods

Tertiary prevention involves reducing the negative effects of an already existing problem or condition. Providing psychotherapy to someone who has been abused is an example of tertiary prevention for child maltreatment. Option A and B are examples of primary and secondary prevention, respectively, as they aim to prevent child abuse before it occurs or before it escalates. Option D is an example of primary prevention as it aims to provide youths with positive alternatives and environments to prevent child abuse from happening in the first place.