Primary groups provide the members with needs while Secondary groups meet needs for the members. A. utilitarian; bureaucratic B. effect; formal C. expressive; instrumental D. coalition; triad

C. expressive; instrumental

Explanation:

primary group:- It is often a small social group whose members have deep, personal, long-lasting relationships.

While secondary groups are huge groups with professional and goal-oriented relationships.

The primary groups help in expressive needs whereas secondary groups help in meeting instrumental needs for the members of the group.