The correct option is C Tropical desert
Deserts occupy approximately one - fifth of the land. The region lacks rain (less than 25 cms) due to either being present in rain shadow (area beyond high mountains which cut off clouds e.g., Tibet), lack of cloud intercepting mountains (e.g., Thar) or lying away from cloud seeding regions e.g., Death Valley (Great Western Desert) of USA, Sahara (Africa), Gobi, Arabian and Thar of Asia. Desert can be cold (e.g., Tibet, Gobi), and hot (e.g., Thar, Sahara). Whether cold or hot, vegetation is sparse and treeless. In Tropical deserts, summers are hot and winters are warm as compared to other regions.