Question

which of the following led to dust storms during the 1930s?
○ the practice of crop rotation
○ ranching and heavy rains
○ farmers’ financial problems
○ both farming and drought

Explanation:

The 1930s Dust Bowl was caused by unsustainable farming practices (like over-plowing native grasses that held soil in place) combined with severe, prolonged drought that dried out the topsoil, making it easily wind-blown into dust storms. Crop rotation is a soil-preserving practice, heavy rains would not dry soil, and financial issues were a result, not a cause.

Answer:

both farming and drought