Bamboo drip irrigation system is an ingenious system of tapping stream and spring water used widely prevalent in:

Correct option is B

Bamboo drip irrigation is a traditional water management system used in Meghalaya.
In Meghalaya, a 200-year-old system of tapping stream and spring water by using bamboo pipes is prevalent. About 18-20 litres of water enters the bamboo pipe system, gets transported over hundreds of metres, and finally reduces to 20-80 drops per minute at the site of the plant.