单项选择题

Questions 8 to 10 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions.
Now, listen to the conversation.

Why did the woman decide to ride the city bus

A.Her car is being repaired.
B.She wants to help reduce pollution.
C.Parking is difficult in the city.
D.The cost of fuel has increased.