TOEFL Listening: ETS-TOEFL听力机经 - Z8V9I8M3R9OW3785P$

Why does the professor say this: A. To express surprise that the student chose to write about Chihuly B. To remind the student what the focus of the paper should be C. To signal the end of the conversation D. To indicate that the student should discuss only one example of Chihuly's work