Answer: Conflict Resolution
Step-by-step explanation:
It's not communication skills, because the coworkers might not listen to her, and fire her. It won't be active listening, because the Cala won't get a chance to explain her situation. Non-verbal communication is also not the answer, because using verbal communication might result in a fight. It's Conflict resolution, because Cala is in a conflict, and using peaceful way and talking about it can solve the problem.