The correct option is C Africa
Both Sahara and the Kalahari Desert is located in Africa. Kalahari desert is a large semi-arid the sandy surface of Botswana in southern Africa extending for 900000 sq. I'm covering many parts of Botswana. Its the climate is subtropical and a semi-arid with the dry season. Summer temperature is very hot but not that much as a comparison to Sahara desert, its temperature never exceeds 29 degree Celsius (daily temperature)and winter temperature goes below 0-degree celsius at night. And in contrast Sahara desert has an average temperature is 30 degree Celsius but during the hottest month temperature can exceed 50 degree Celsius with highest temperature 59 degree Celsius it has an area of 92,00,000 square km. The Sahara is boarded in the west by the Atlantic Ocean. Sand sheets and dunes cover 25% of Sahara surface. Correct answer is C.