A Significant Characteristic of South American Agriculture Is ​

A significant characteristic of South American agriculture is ​

A) ​dependence on extensive, complex irrigation of crops.
B) ​the hybridization of pastoralism and sedentary agriculture.
C) ​development of the heavy plow pulled by oxen.
D) ​the emphasis on vegetarianism.
E) ​a complete reliance on trade with the coast and lowlands by the mountainous settlements in exchange for metal.