Final answer:
The most effective method for dealing with an angry caller is to listen and ask questions calmly, focusing on resolving the issue without placing blame, and maintaining a positive working relationship throughout the conversation.
Step-by-step explanation:
The best approach to an angry caller is C) Listen and ask questions calmly. This tactic helps de-escalate the situation and conveys to the caller that you are actively engaged in resolving their concerns. By choosing your words carefully and staying calm, you avoid inflaming the situation further. It's crucial to let them tell their story and to focus on solving the problem rather than assigning blame. Asking open-ended questions can lead to a better understanding of the issue, and restating what the caller says confirms you're listening and helps prevent misunderstandings. In situations where conflict resolution isn't immediately possible, consulting a supervisor or HR department can be necessary. Remember, maintaining a positive working relationship is often just as important as resolving the individual issue at hand.