Question

What is a drainage basin?

• A. Area drained by a river and its tributaries.
• B. The main river along with all of its tributaries.
• C. Streams that make up the river.
• D. The main river excluding its tributaries.

Answer 1

The correct option is A Area drained by a river and its tributaries.

The area drained by a river and its tributaries is called a drainage basin. The Amazon basin, located in northern South America, was the largest drainage basin in the world. The Amazon River and its tributaries drain an area nearly seven million square kilometers.