removing grass from the steepest slope. building terraces into the sides of a slope. heavily watering the vegetation on the slope. increasing the slope of the land by adding more soil.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Soil erosion can be best prevented by
Possibilities:
- removing grass from the steepest slope.
- building terraces into the sides of a slope.
- heavily watering the vegetation on the slope.
- increasing the slope of the land by adding more soil.

building terraces into the sides of a slope.