Gouran and Hirokawa's Functional Theory Is Used to Explore Which

Multiple Choice

Gouran and Hirokawa's functional theory is used to explore which of the following?

A) the roles that members must play in the problem-solving discussion
B) none of these answer is correct
C) the idea that group members must use different leadership styles to achieve their tasks
D) the communicative functions that must be performed if a group is to do a good job
E) the functions that the designated leader must perform