Geohydrological unit of the land which drains through a common point is called

Correct option is C

The correct answer is (C) Watershed

Explanation:
•
• A Watershed (also called a drainage basin or catchment area) is a geohydrological unit of land where all the water that falls under it drains to a single common outlet, such as a river, lake, or ocean.
• It is bounded by a topographical ridge called a "divide." Anything that happens in the upper part of the watershed (like pollution or deforestation) affects the water quality and flow at the bottom (the outlet).
• Watersheds are considered the most scientific unit for the management of natural resources like soil and water.

Information Booster:
• Watershed Management involves soil conservation, afforestation, and rainwater harvesting (e.g., check dams).
• Classification by size: Macro-watershed (> 50,000 ha), Micro-watershed (500-1000 ha), and Mini-watershed (1-100 ha).
• The Neeranchal National Watershed Project is a prominent scheme in India for watershed development.

Additional Knowledge:
• Pond (Option A): A small, localized body of water, not a drainage unit.
• Water body (Option B): A general term for any significant accumulation of water (oceans, rivers, lakes).
• Rain shed (Option D): A term sometimes confused with 'rain shadow' (an area having little precipitation due to the effect of a mountain range), but not a hydrological drainage unit.