A、New York. B、Boston. C、Michigan. D、Washington. D根据选项，推测对话的内容与地点相关，对话中出现了三个地点，听对话的时候可知女士最终去的地方是Washington，另外两个只是曾经考虑过，因此答案是D

W: Hello, Mr. Johnson! I am calling about the car you advertised. Can you tell me something about it? M: It’s my wife’s car and she’s the one who put the ad in the paper. But I’ll try. She isn’t here right now.
Q: What is the man trying to do?

M: Are you glad that you came to Washington?
W: Yes, indeed. I had considered going to New York or Boston, but I’ve never regretted my decision.
Q: Where did the woman go in the end?