What Happened as Early Indians Learned to Make Better Use

What happened as early Indians learned to make better use of local resources?

A) They tended to expand their annual migratory practices.
B) Cultural diversity led to an increase in the number of languages spoken.
C) They made less use of grains and wild plants, turning instead to the hunting of herd animals.
D) They became culturally isolated because they tended to stay in one place.