Which of the following statements is true about topic choosing?

A.An experienced speaker can demonstrate his /her scope of knowledge by choosing a broad and general topic.

B.Choosing a topic that the speaker has never heard of before is an effective way to arouse the audience’s interest.

C.Topic choosing has never been a problem for those who have seen much of the world.

D.Personal experiences and expertise are good sources of inspiration in topic choosing.

正确答案：Personal experiences and expertise are good sources of inspiration in topic choosing.