Which country is home to the Kalahari Desert, known for its red sand and large game reserves?

The Kalahari Desert is primarily located in Botswana, making it the correct answer. This vast semi-arid sandy savanna is known for its striking red sand dunes and is an important ecological region supporting diverse wildlife, notably including large game such as elephants, lions, and various antelope species. Botswana is home to significant game reserves, like the Central Kalahari Game Reserve, which protects these animals and their habitats.

While Namibia, South Africa, and Zimbabwe all share borders with the Kalahari Desert and may contain parts of it or similar environments, they do not have the desert's extensive area or the same prominence in terms of large game reserves as found in Botswana. Thus, the association between the Kalahari Desert and Botswana is particularly strong, marking it as the definitive host of this iconic landscape.