Match the List I (River) and the List II (Continent) and select the correct answer using the codes given below the lists

(River) | (Continent)
A. Amazon | 1. Asia
B. Lena | 2. Africa
C. Mackenzie | 3. North America
D. Zair | 4. South America

The correct answer is Option 4 (A-4, B-1, C-3, D-2). This matching accurately aligns major world rivers with their respective continents based on geographical facts:

• Amazon (A-4): Located in South America, it is the world's largest river by discharge volume and the second longest globally.
• Lena (B-1): One of the three great Siberian rivers, the Lena flows through Asia (specifically Russia) into the Arctic Ocean.
• Mackenzie (C-3): This is the largest and longest river system in Canada, situated in North America.
• Zaire (D-2): Also known as the Congo River, it is the deepest river in the world and the second longest in Africa.

Other options are incorrect because they mismatch these fundamental geographical associations. Option 4 is the only sequence that correctly identifies the continental location for all four river systems simultaneously.