Concept:Socialization agents are the institutions or groups that teach a person the norms, values, and behaviors of society.Explanation:Family is the first and most important agent of socialization. Parents teach basic skills, manners, and relationships. Peer groups, consisting of people of similar age and status, provide social learning outside the family, especially during adolescence. All the given options—family, parents, and peer group—are recognized agents of socialization. Other agents include religion, media, and school, but the question specifically lists these three. Since each option is a valid agent, the correct choice includes all of them.Answer:D. All the above