TOEFL Listening: ETS-TOEFL听力机经 - C6K9K34CQ1S1J659P$

What is the professor's opinion of the paper written by researchers in Spain? A. Its challenge to the meeting-point hypothesis is convincing. B. It raises more questions about fish aggregation than it answers. C. It effectively shows that the shelter-from-predators hypothesis is not true for most fish species. D. It supports the food-supply hypothesis.