Explanation:

The Kalahari Desert is a large semi-arid sandy savanna located in Southern Africa, covering much of Botswana and parts of Namibia and South Africa. Therefore, option A is factually correct. Option B, North Africa, is home to the Sahara Desert, not the Kalahari. Option C, West Asia, contains deserts like the Arabian Desert. Option D, South America, features deserts such as the Atacama and Patagonian Deserts. Thus, options B, C, and D are geographically incorrect.