The correct answer is Twitter.Reserve Bank of India became the first central bank in the world to have more than one million followers on Twitter in November 2020.The Reserve Bank of India (RBI) is the central bank of India whose primary function is to manage and govern the financial system of the country.The Reserve Bank of India was founded on 1 April 1935, in Kolkata, and its headquarters is located in Mumbai.As of now January 2022 the Reserve bank of India governor is Shaktikanta Das.Reserve Bank of India Act, 1934 is the legislative act under which the Reserve Bank of India was formed.This act along with the Companies Act, which was amended in 1936, was meant to provide a framework for the supervision of banking firms in India. Additional InformationCompanyDetailsCEOHeadquartersInstagramInstagram is an American photo and video sharing social networking service founded by Kevin Systrom and Mike Krieger.Kevin SystromMenlo Park, California, United StatesTwitterTwitter is an American microblogging and social networking service on which users post and interact with messages known as tweets.Parag AgrawalSan Francisco, California, United StatesSnapchatSnapchat is an American multimedia instant messaging app and service developed by Snap Inc., originally Snapchat Inc.Evan SpiegelSanta Monica, California, United StatesFacebookMeta Platforms, Inc., also known as Meta and formerly known as Facebook, Inc., is a multinational technology conglomerate based in Menlo Park, California.Mark ZuckerbergMenlo Park, California, United States