Answer : 4. "भारत के 25 करोड़ पारंपरिक मीटरों को स्मार्ट मीटर से बदलना"
Explanation :

Kerala's decision to choose an alternative approach for smart electricity meters undermines the government's Rs 3 lakh crore smart meter project. Smart meters record electricity usage and voltage levels, aiming to increase billing and collection efficiency for distribution companies. Smart Meter National Program (SMNP) aims to replace 25 crore conventional meters with smart meters across India.