Which of the following can help in conservation of water?

Correct option is B

The Correct Answer is B: Rainwater harvesting.

Explanation:

• Rainwater harvesting captures and stores rainwater, reducing dependence on other water sources.

Key Points:

• Rainwater harvesting reduces water wastage, helps recharge groundwater, and is used for irrigation, drinking, and domestic needs.
• It is environmentally friendly and supports sustainable water management.

Additional Information:

• Culling animal population: Irrelevant to water conservation.
• Halving the supply of drinking water: Not a viable solution.
• Setting up water treatment factories: Focuses on purification, not conservation.