Correct Answer: (a) Gully erosion
Note: The badlands of Madhya Pradesh is a result of gully erosion. Badlands has formed due to gully erosion in Ujjain, Mandsaur, Bhind, Muraina and Gwalior districts of Madhya Pradesh, Agra, Mathura, Banda, Hamirpur, Etawah and Jalaun districts of Uttar Pradesh and Kota, Bundi, Sawai, Tonk, Jhaleswar, Jaipur etc. district of Rajasthan.