PLEASE HURRY HURRY a Which of the following was not a harmful farming practice that contributed to the severe damage of Great Plains farmland during the Dust Bowl era?

a. Farmers encouraged wheat crop production and aggressively discouraged native plant growth.

b. Farmers failed to use fertilizers to encourage crop production

C. Farmers avoided the practice of rotating crops to diversify soil nutrients

d. Farmers did not construct natural barriers to prevent wind erosion.