Correct Answer : Eastern & Southern part of the Deccan Plateau
Approximately 10.6% of the total geographical area of India is covered by red soil, including Tamil Nadu, parts of Karnataka, southeastern Maharashtra, eastern Andhra Pradesh and Madhya Pradesh, Orissa, Chhattisgarh, Chota Nagpur (Jharkhand), south Bihar, West Bengal (Birbhum and Bankura), Uttar Pradesh (Mirzapur, Jhansi, Banda, and Hamirpur), Aravallis, eastern Rajasthan, Assam, Nagaland, Manipur, Mizoram, Tripura, and Meghalaya etc,. So Option (C) is correct.