The correct option is A soil fertility
A method of farming where different crops are grown in succession on a piece of land to maximise soil fertility is called crop rotation. Continuous cultivation of the same crop leads to an imbalance in the fertility demands of the soil. Crop rotation is the practice of growing a series of dissimilar or different types of crops in the same area in sequential seasons. Thus, crop rotation should be done to ensure that various nutrients are present for the next crop.