Answer : 4. "Replacing 25 crore traditional meters of India with smart meters."
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.