please help!!!

Tara and Kevin both work in the manufacturing line. lan, the line manager, wants to terminate the employment relationship with Tara because her performance is at a very low level and her attitude toward her job is very pessimistic and affecting other workers in a negative manner. However, Tara is a member of the union, and terminating the employment contract with her does not seem easy. On the other hand, Kevin is a high performer with a great attitude. Because he is so good at his job, many employees seek advice from Kevin for job-related problems that they encounter. Today, both Tara and Kevin have notified lan that they will be leaving the company in about a month. Tara's turnover case can be viewed as a(n) turnover. functional uncontrollable (unavoidable) controllable (avoidable) dysfunctional