The grassy roots were gone and the wind was high describes which of the following
a.) plain's dust
b.) dust bowl
c.) plain's bowl
d.) dusty plains

b.) Dust Bowl

Explanation:

The Dust Bowl was one of the worst ecological disasters of the 20th century that took place during the 1930s. The drought affected the plains that extend from the Mexican Gulf to Canada between 1932 and 1939 and it was preceded by a long period of large rains. The drought was caused by years of practice of intensive agriculture that let the soil susceptible to wind action. Therefore, the soil, stripped off of the humidity, was risen by strong winds creating thus large dust clouds.  The Dust Bowl multiplied the effects of the Great Depression in the region and caused the largest population displacement in a short period in the history of the United States. Three million inhabitants left their farms during the 1930s, and more than half a million emigrated to other states, especially to the west.

i believe it d) heterogeneous