Correct Response: A. Prosocial behavior is any action that helps others and is usually motivated by altruism. Showing empathy for other people is one of the first prosocial behaviors a child is able to demonstrate. Nonverbal forms of communication (B) are a factor in interpersonal relationships and are a part of socialization but are not considered an aspect of prosocial behavior. The classification of people into meaningful categories (C), while a part of socialization, is related to social perception rather than being an element of prosocial behavior. Evaluating the long-term benefits and costs of interpersonal relationships (D) exceeds the development level for children in the 5–8 age range.