The correct answer is Alluvial soil. Alluvial soil is found in most (43. 4%) of the landmass in India. Other soils are found in black soil, red soil, and laterite soil. Alluvial Soil -It is the soil of the plains of North India and the coastal plains of South India, which is mainly carried by rivers. Potash and lime are found in abundance in this soil and lack of phosphorus, nitrogen, and bacteria. This soil is very fertile for the cultivation of sugarcane, wheat, paddy, oilseeds, pulses, etc. Red Soil-?This soil has the highest iron content. It is found in Tamil Nadu, Karnataka, South Eastern Maharashtra, Odisha, East Madhya Pradesh, some parts of Bundelkhand, and Chhota Nagpur. The crops grown in it are tobacco, millet, oilseeds, and wheat. ?Black Soil-It is found in the lava regions of Gujarat, Maharashtra, Madhya Pradesh, and Tamil Nadu. Black soil is also known as Kapasi soil or Regur soil or Lava soil. Additional Information The origin and classification of soil and detailed study of soil is done under "Pedology".