The correct answer is letter B
The Kalahari desert is located in the south of the African continent, has an area of approximately 900 thousand km² and covers territories in Namibia, Botswana and South Africa. According to experts, the desert was formed because of the cold current coming from the Benguela region, which brings water vapor from South Africa into the continent, mainly through this region. Condensation causes the hot air masses to reach dry levels forming the desert. The name is derived from the word kgalagadi in the Tsuan language and means "the great seat".