TOEFL Reading: ETS-TOEFL阅读机经 - 8Q5H3V54CEO6R954L$

According to paragraph 5, what is an important weakness of the adult aggregation hypothesis A. It is based on studies of the deeper parts of coral reefs. B. It fails to explain the abundance of Acanthaster in the deeper parts of coral reefs. C. It fails to explain why Acanthaster feed hungrily on healthy coral after a storm. D. It is not supported by evidence that storms rusult in food shortages for Acanthaster.