TOEFL Reading: ETS-TOEFL阅读机经 - O6SG7H973Y1MZJR3L$

According to paragraph 2, how do sardines and anchovies obtain food near the surface of the ocean? A. They rely on the large quantities of food resources also available to local carnivores. B. They capture the larvae of some crustaceans. C. They feed on the organisms left over by commercial fisheries. D. They obtain algae by using their gills as filters.