Answer:
The correct answer is a) Erosion of the fertile topsoil, as the developers cleared the land and the lack of trees and grass allowed winds to sweep the soil away.
Step-by-step explanation:
Soil erosions usually occur due to land degradation through different factors from those caused by man and the natural ones, it is common for soil erosion when it is on dry land and without vegetation.
For example, in the Sunnyfield Farms case, their lands did not produce their crops due to soil erosion, produced by the lack of trees and grass that allowed the soil to absorb water, likewise, the cleaning that they did at the beginning may have affected and helped land erosion, caused infertile land.
I hope this information can help you.