GRE Reading Comprehension: JiJing 352-GRE阅读机经352篇 - YSE2O69GS515PY99J

It can be inferred that the purpose of "loud, conspicuous alarm calls" is in part to A. cause the chimpanzees to leave the areas B. warn other monkeys of the presence of the chimpanzees C. enable chimpanzees to flee quietly from the leopard D. signal to the chimpanzees that they have been detected E. signal to the leopard that it has been detected by the monkeys