The correct answer is: B) Rainwater harvesting.
Rainwater harvesting is the collection of rainwater for reuse. It is a simple, low-cost, and effective way to conserve water. Rainwater can be collected from roofs, paved surfaces, and other areas. It can be used for a variety of purposes, including watering plants, washing clothes, and flushing toilets.
Rainwater harvesting is a sustainable practice that can help to reduce water pollution and conserve water resources. It is also a cost-effective way to meet the water needs of households and businesses.
The other options are incorrect because:
- A) Large-scale deforestation is not a sustainable practice and can lead to soil erosion and water pollution.
- C) Increased industrial water usage can lead to water shortages for other users, such as households and businesses.
- D) Extensive use of groundwater can lead to groundwater depletion and saltwater intrusion.
In conclusion, the state government promotes rainwater harvesting to conserve water during dry seasons. Rainwater harvesting is a simple, low-cost, and effective way to conserve water. It is also a sustainable practice that can help to reduce water pollution and conserve water resources.