【单选题】Both in what is now the eastern and the southwestern United States, the peoples of the Archaic era (8,000-1,000 B.C) were, in a way, already adapted to beginnings of cultivation through their intensiv...
A.
The principal sources of food that made up their diet
B.
Their development of ground stone tool technology
C.
Their development of agriculture
D.
Their distribution of work between men and women