为什么不能选B？？？

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6.        What is the main purpose of the lecture?
A.        To compare active habitat selection with passive habitat selection
B.        To show that most habitat preferences in animals are learned
C.        To compare the habitat requirements of several bird species
D.        To examine the consequences of habitat selection by animals


TPO 8 Lecture 1 Animal Behavior
Pro: OK. Well, last time we talked about passive habitat selection, like plants for example, they don\'t make active choices about where to grow. They are dispersed by some other agent, like the wind. And if the seeds land in a suitable habitat, they do well and reproduce.

With active habitat selection, an organism is able to physically select where to live and breed. And because an animal’s breeding habitat is so important, we’d expect animal species to have developed preferences for particular types of habitats, places where their offspring have the best chance of survival. So let\'s look at the effect this preference can have by looking at some examples.