Pg 516 (448) - Q31
B is not correct because the author mentions that it hasn’t been proven that wild animals suffer few long-term consequences from changes in their habitat. C is incorrect because no politics is mentioned in the whole passage. D is incorrect because even though not enough studies have been done using wild animals as a source of data, they are possible, and wild animals COULD provide an adequate source of data. E is incorrect because animals do NOT behave as they would have before they were captured and placed in zoos, so they would not fulfil the expectations of zoo visitors. Only A is correct because the author suspects that removing wild animals from their natural habitats harms them, but he acknowledges that in some dire circumstances—such as the possibility of extinction—the measure is necessary.