In the Context of Supervisors' Relationships with Their Managers, "Communication

In the context of supervisors' relationships with their managers, "communication" means

A) a supervisor works with others in the organization to achieve organizational goals.
B) a supervisor says only positive things about company policies and about his or her manager.
C) a manager expects supervisors to keep him or her informed about the department's performance.
D) a manager should see that the department meets or exceeds its objectives.