Answer : 1. "Reserve Bank of India"
Explanation :

Co-operative banks in India are regulated by both the Reserve Bank of India (RBI) and the respective state governments. RBI is responsible for licensing, supervision and regulation of co-operative banks in India. Co-operative banks are owned and controlled by the members, who democratically elect a board of directors. Co-operative banks were brought under the regulatory framework of the Reserve Bank of India (RBI) in 2020.