Answer: C
Correct answer: The Thar, in Rajasthan
The Thar, or Great Indian Desert, lies chiefly in western Rajasthan and extends into Gujarat, Haryana and Punjab and across the border into Pakistan. It covers about 200,000 square kilometres. The other three deserts named are on other continents entirely: the Gobi in Mongolia and China, the Kalahari in southern Africa, and the Atacama in Chile. The Thar is unusual for being the most densely populated desert in the world, supporting pastoralism and, since the Indira Gandhi Canal brought Sutlej water south, irrigated agriculture. India does have a cold desert as well, in Ladakh and the Spiti valley of Himachal Pradesh, arid because it lies in the rain shadow of the Himalaya. A desert is defined by low precipitation rather than by heat, which is what admits it. The Thar holds the Desert National Park, refuge of the great Indian bustard, and India’s best conditions for solar and wind generation.