The correct option is B As they freely graze and spoil the soil by their hoofs.
Overgrazing of forests and grasslands by animals, especially by goats and sheep, should be properly checked. Separate grazing grounds should be earmarked and fodder crops should be grown in larger quantities. Animals freely move about in the fields for grazing and spoil the soil by their hoofs which lead to soil erosion. This should be avoided. Therefore, the correct answer is option B.