What did farmers remove from the land when plowing that lead to the dust bowl?

topsoil
corn
weeds
earthworms

Farmers remove topsoil from the land when plowing that lead to the Dust Bowl.

Option A

Explanation:

Dust bowl in the United States of America was a great dust bowl which caused huge loss to the farmers and made them go totally out of business and huge loss to the fertility of land because of which there could be no further cultivation.

During the time of ploughing, the farmers remove the top soil for this further processing, this leads to the dust bowl formation from the massive dust storms because of removal of top soil leading to huge losses.