Answer : 4. "Victoria"
Explanation :

Lake Victoria is located at the border of Uganda, Kenya, and Tanzania in the African continent.

River Nile originates from Lake Victoria and drains into the Mediterranean Sea.

Victoria Lake is the largest tropical lake in the world and one of the largest freshwater lakes in the world by area.

Its area is 26,828 square miles (69,484 square km).

Among the freshwater lakes of the world, it is only behind the Lake Superior of North America.

Its waters fill a shallow depression in the centre of the great plateau that stretches between the Western and Eastern Rift Valleys.