The correct option is D Aravallis
Rajasthan, the largest state of India, has an area of 3,42,239 sq km. Rajasthan covers the territory which has a very mature topography, developed during the thousands of years of denudation and erosional processes. Physiographically, it is difficult to find a region more varied and diverse than Rajasthan. It is a land of lofty hills and shifting sand dunes, of scorching heat and freezing cold, of fertile plain, rugged ravines and dense forests. However, desert remains its dominant pecularity, besides the mountaineous Aravalli range that divides the land into two natural divisions. Aravalli ranges are one of oldest of the world. The other ranges are comparatively new.