Correct Answer: For increasing fertility of the soil

Solution : The correct answer is for increasing fertility of soil.

Naturally the soil fertility depends upon the parent Rock material and the vegetation. Crop rotation is a practice of growing different crops in successive seasons. High nutrient demanding crops are followed by low nutrient demanding crops which helps the soil to regain its lost nutrients and improve its fertility. It also dissociates pests and weeds cycle of growth and helps to produce good output.

Example- maize and mustard, rice and wheat etc.