Answer : 2. "कर्नाटक"
Explanation :

Bengaluru, known as the 'Garden City', is facing its worst domestic water crisis. More than 30 localities get water on a rotational basis every other day, with supply lasting only 30-45 minutes. The city, once blessed with 262 lakes, now has only 81 lakes left due to real estate development. The remaining lakes are in danger, affecting the city's water supply. Weak monsoon has increased dependence on the Krishna Raja Sagar reservoir, leading to water shortages and skyrocketing tanker prices. Community participation is important for lake conservation.