a reduction in the rate of species change an increase in the rate of large mammal extinctions an increase in the amount of interspecies cooperation a reduction in the total number of small parasitic insects
I gave my students this multiple choice question: Approximately 14,000 years ago, the climate in North America began to warm rapidly. At the same time, human hunters migrated to the continent. Which of these most likely resulted from a combination of these two factors?

Only one answer is correct among these 4 choices:
- a reduction in the rate of species change
- an increase in the rate of large mammal extinctions
- an increase in the amount of interspecies cooperation
- a reduction in the total number of small parasitic insects

Could you tell me which one is correct?

an increase in the rate of large mammal extinctions