TOEFL Listening: TPO-TOEFL听力TPO - Q57PF94UMT8E928VR$

What does the professor mean when she says this: A. Pleistocene rewilding has been tried before without success B. Pleistocene rewilding should be tried with just a few species C. Pleistocene rewilding has already been thoroughly researched D. Pleistocene rewilding is another form of human interference.