Read the passage given below and answer the following question: (Q 2)
Since there is a declining availability of freshwater and increasing demand, the need has arisen to conserve and effectively manage this precious life giving resource for sustainable development. Given that water availability from sea/ocean, due to high cost of desalinisation, is considered negligible, India has to take quick steps and make effective policies and laws, and adopt effective measures for its conservation. Besides developing water-saving technologies and methods, attempts are also to be made to prevent the pollution. There is need to encourage watershed development, rainwater harvesting, water recycling and reuse, and conjunctive use of water for sustaining water supply in long run.

Assertion: Rainwater harvesting has been practised through various methods by different communities in the country for a long time.
Reasoning: In Karnataka, rainwater harvesting structures locally known as Kund or Tanka

Assertion (A) is true but Reasoning (R) is not correct.

The correct answer is Option 3: Assertion (A) is true but Reasoning (R) is not correct.

Assertion: Rainwater harvesting has been practised through various methods by different communities in the country for a long time. — True. Different regions of India have traditionally used various rainwater harvesting systems according to local climatic and geographical conditions.

Reasoning: In Karnataka, rainwater harvesting structures locally known as Kund or Tanka. — False. Kunds and Tankas are traditional rainwater harvesting structures found mainly in Rajasthan, especially in arid regions. They are not associated with Karnataka.