Largest desert in the world?

Deserts are defined by their extremely low precipitation, not necessarily by high temperatures. Based on this definition, Antarctica is the largest desert in the world.

• Antarctica (option D) is a polar desert, receiving less than 200 mm of precipitation annually, making it the driest continent and thus the largest desert.
• The Sahara (option B) is the largest hot desert, located in North Africa.
• The Gobi (option A) is a large cold winter desert in Asia.
• The Kalahari (option C) is a large semi-arid sandy savanna in Southern Africa.

While vast, none of these hot or cold deserts surpass Antarctica in sheer size when considering the scientific definition of a desert.