Concept:North Africa is a sub-region of Africa that includes countries bordering the Mediterranean Sea and the Sahara's northern edge.
Explanation:Algeria is one of the countries officially grouped under the United Nations sub-region of North Africa.
This region also includes Egypt, Libya, Morocco, Tunisia, and Sudan.
Zaire (now the Democratic Republic of the Congo), Rwanda, and Namibia are all located in Central, East, and Southern Africa respectively.
Therefore, among the listed options, only Algeria lies in North Africa.
Answer:Algeria (Option D).