Paleo-Indians found an abundance of wildlife in Oklahoma to support their needs. Which of the following factors led to large populations of wildlife in Oklahoma during the time of the Paleo-Indians?
A. Asurplus in farming led to less hunting,
B. Paleo-Indians had trouble hunting megafauna.
C. The climate allowed grasslands and forests to develop,
D. The Ice Age brought colder winters and made hunting difficult.