Which landform is located nearest number 1?

To accurately determine which landform is located nearest number 1, I would need to know what "number 1" refers to in this context (e.g., a specific location or a point on a map). Could you please provide more information or clarify what "number 1" refers to?

The very top of africa

If we are referring to the top of Africa, more specifically the northernmost point (which is Cape Verde in Tunisia), the nearest landform from your list would be:

**D. Sahara Desert**

The Sahara Desert is the largest hot desert in the world and is located across much of North Africa, encompassing several countries including Tunisia. The Kalahari Desert is located in the southern part of Africa, the Namib Desert is in Namibia (southwest Africa), and the Alps are a mountain range located in Europe. Therefore, the Sahara Desert is the closest to the northern tip of Africa.