As of 2021, which is the world's largest drainage basin with an area of about 70,00,000 km2?

Correct option is C

The correct answer is (c) Amazon basin.
· As of 2021, the Amazon Basin is the world's largest drainage basin, covering an area of approximately 7,000,000 km².
· It is located in South America and encompasses several countries, including Brazil, Peru, Colombia, and parts of Venezuela, Ecuador, and Bolivia.
· The Amazon Basin is fed by the Amazon River, which is the largest river in the world by discharge volume, and its tributaries.
Explanation of Other Options:
· Congo basin: This is the second-largest drainage basin in the world, covering around 4,000,000 km² in central Africa.
· Amur basin: Located in northeastern Asia, this basin is significantly smaller than the Amazon Basin.
· Nile basin: This basin covers a large area in northeastern Africa but is smaller than the Amazon Basin.