Sub-Saharan Africa is a
the area within the Sahara Desert

b
the area north of the Sahara Desert

c
the area south of the Sahara Desert

d
the Sahel

C

Explanation:

Sub-Saharan Africa is, geographically and ethnoculturally, the area of the continent of Africa that lies south of the Sahara. According to the United Nations, it consists of all African countries and territories that are fully or partially south of the Sahara.