Question

The area drained by a river and its tributaries is known as a .

• A. water divide
• B. drainage basin
• C. river system
• D. lagoon

Answer 1

The correct option is B drainage basin

The area drained by a single river system is called a drainage basin. An elevated land that separates two drainage basins is called a water divide. The main river along with its tributaries forms a river system. Lagoons are shallow water bodies separated from larger ones by coral reefs or barrier islands.