The correct option is C (i) and (ii)
Manure contains large quantities of organic matter and it is added to the soil to increase its fertility. Manure increases the water-holding capacity of the soil. This makes more water available to the plants. Manure is produced naturally by decomposing plant and animal wastes with the help of microorganisms. It prevents environmental pollution because it recycles plant and animal wastes. Therefore, option B is correct.