TOEFL Listening: ETS-TOEFL听力机经 - 4FC3E31J1T973LI3P$

Why does the professor talk about a painting depicting a harbor scene at sunrise? A. To compare it with a photograph of the same subject B. To explain a technique used by painters to convey the passage of time C. To explain the difference between Cézanne's paintings and the paintings of other Impressionists D. To introduce a type of painting that Impressionist painters rebelled against