Why did Isaksen advise people not to have foreign pets？A. They attack human beings.B.

Why did Isaksen advise people not to have foreign pets？

A. They attack human beings.

B. We need to study native animals.

C. They can’t live out of the rain forest.

D. We do not know much about them yet.

请帮忙给出正确答案和分析，谢谢！