The correct answer is A. Primary group
Explanation:
In sociology, a primary group is a relatively small group such as family or close friends that is characterized by long-term and frequent interaction along with close personal bonds, This group differs from others groups because in primary groups the relationship between individuals endure, also, they involve support, love, concern, etc. while in other types of groups such as secondary groups relationships do not last and are not personal. According to this, it is "primary group" the word that fits with the definition provided.
