Which major physical division of India is spread largely in Rajasthan?

Correct answer: Indian Desert

The direct answer is option D: the Indian Desert is spread largely in Rajasthan. This desert is commonly known as the Thar Desert and occupies much of western Rajasthan, extending into nearby areas of Gujarat, Haryana and Punjab. Its important features include low rainfall, dry conditions, sandy surfaces and wind-made dunes. Option D is correct because Rajasthan is the state most strongly associated with the Indian Desert. Option A is wrong because the Northern Plains are mainly the level alluvial region of the Indus, Ganga and Brahmaputra systems, not the desert region of western Rajasthan. Option B is wrong because island groups are in the Arabian Sea and Bay of Bengal, not spread across Rajasthan. Option C is wrong because Coastal Plains lie beside the eastern and western seas, whereas Rajasthan is largely inland. Therefore D is the only suitable division. Memory cue: western Rajasthan equals Thar, and Thar is the Indian Desert.