TOEFL Reading: ETS-TOEFL阅读机经 - R633718SSMD3Q34LL$

Paragraph 2 indicates which of the following about fruit trees in the tropics A. They have been the plants most studied by biologists in the tropics. B. They don't need to grow much before they begin to produce fruit that tropical animals can eat. C. They can spread to areas far from the mother tree, in part because of the eating habits of some carnivores. D. They have become the main source of food for pumas, jaguars, and otters.