【单选题】听力原文: OK, can anyone answer this question? What are the most important things for animals in terms of their survival? Anyone? No? OK. Well, on a very basic level, the most important things for them ar...
A.
Real estate prices.
B.
Campbell monkeys' eating habits.
C.
The interactions of various species.
D.
The relationship between Diana and putty-nosed monkeys.