What is the term for a social group that is informal and often characterized by close social ties?

The correct term for a social group that is informal and characterized by close social ties is a primary group. Primary groups are typically small and consist of individuals who have strong emotional bonds and interact with one another regularly. These relationships are often marked by intimacy and personal connections, such as those seen in families or close friendships.

In sociology, primary groups play a vital role in socialization and emotional support, providing a foundation for individuals' identities and social interactions. The informal nature of these groups allows for more genuine and supportive relationships compared to more structured or formal groups.

Other types of groups, such as secondary groups, are larger and more impersonal and typically focus on specific tasks or goals rather than emotional connections. Public and formal groups are structured and may not foster the same level of intimacy or close ties among members. Thus, the significance of primary groups lies in their role in nurturing close relationships, which is essential for individual and collective well-being.