| (River) | (Countries) |
| 1. Niger | Guinea |
| 2. Orange | S. Africa |
| 3. Karai | Egypt |
| 4. Nile | Mali |
A) 1 and 2
B) 1 and 3
C) 1, 3 and 4
D) 2, 3 and 4
Correct Answer: A
Solution :
The Niger River is the principal river of western Africa, extending about 4,180 km. Its drainage basin is \[2,117,700\,\,k{{m}^{2}}\] in area. Its source is in the Guinea Highlands in south eastern Guinea. The Orange River is the longest river in South Africa. It rises in the Drakensberg Mountains in Lesotho, flowing westwards through South Africa to the Atlantic Ocean. The Nile, which is 6,853 km (4,258 miles) long, is an "international'' river as its drainage basin covers eleven countries, namely, Tanzania, Uganda, Rwanda, Burundi, Congo-Kinshasa, Kenya, Ethiopia, Eritrea, South Sudan, Sudan and Egypt. In particular, the Nile is the primary water source of Egypt and Sudan.
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