I need help with this question for my Help Desk Homework.

Scenario #2: You're the newly appointed ethics officer for your company. After creating the course materials for educating employees on the finer points of handling common ethical dilemmas in your business, you've trained all the managers in each division so they can educate their employees. You've just recieved a phone call from Natalya in sales, who was upset after completing the training with Bill, her manager. She tells you that Bill started the training by stating that he "didn't believe in all this ethics nonsense, but he had to tell us anyway". Which conflict management method should be used with Bill, and why?