Question

what forms of technology did farmers use to adapt to the dry conditions of the great plains?
a. trucks and automobiles
b. refrigerated railroad cars
c. barbed - wire fencing and hydroelectric dams
d. irrigation and windmills

Explanation:

Farmers in the Great Plains needed solutions for dry conditions. Irrigation systems could bring water to crops. Windmills could pump water from wells (as there was often wind on the plains). Trucks/automobiles (A) are for transportation. Refrigerated railroad cars (B) are for transporting perishable goods. Barbed - wire fencing (C) is for livestock containment, and hydroelectric dams are large - scale power projects not directly for adapting to dry farming on individual farms.

Answer:

D. Irrigation and windmills