Answer:
Informal structure
Explanation:
According to max weber, Infromal structure refers to a part of organization that does not necessarily a part of the formal hierarchical structure, but still co-exist with it and contribute the group's well-being.
For example,
Let's say that in the formal structure, Person A held the status as Person B's supervisor.
Outside the work hours, Person A and Person B actually good friends that like to hangout together. During the work hours, the friendship between person A and person B will influence the dynamic within their formal structure. Person A wouldn't treat person B as he treat other normal employees.
This type of social relationship could either be good or bad depending on how both of the act on it. This is what referred to as informal structure.
