TOEFL Listening: ETS-TOEFL听力机经 - 3NRY3A4U8I1L3355P$

What point does the professor make when he refers to a study about schools of fish? A. It stimulated an idea about how to make some wind farms more efficient. B. It prompted engineers to make changes to the design of three-propeller turbines. C. It shows that marine life is harmed by wind farms that are located along the coastline. D. It explains why turbines are most efficient when they are all spinning in the same direction.