TOEFL Listening: TPO-TOEFL听力TPO - O3211MP2W2WOS776R$

The professor mentions a series of computer simulations. What did the simulations suggest? A. The killing of only a few mammoths could lead to a significant reduction in the mammoth population. B. Many mammoths died as the result of an extended drought. C. Female mammoths were less able than male mammoths to adapt to climate change. D. Both hunting and climate change contributed to the extinction of the mammoths.