15. A) A car dealer.

　　B) A mechanic.

　　C) A driving examiner.

　　D) A technical consultant.

　　W：Its always been hard to get this car into first gear. And now the clutch seems to be slipping.

　　M：If you leave the car with me, I will fix it for you this afternoon.

　　Q：Who is the woman probably speaking to?

　　B)。 四个选项都是职业名称，因此推测本题考查说话人的身份。两人的对话中提到了this car，first gear，clutch，fix it for you等关键词，而且男士说要为女士修车，可见女士的说话对象应该是机修工。故正确答案为B)。