The correct answer is Urjit Patel. Urjit Patel was the 24th Governor of the RBI. His tenure was from 2016-2018. The Governor of the Reserve Bank is the ex-officio chair of its Central Board of Directors. Indian Rupee currency notes, issued by the Reserve Bank of India, bear the Governor's signature. Additional InformationShri Shaktikanta Das is the present Governor of the RBI. He assumed charge as the 25th Governor of the Reserve Bank of India effective from December 12, 2018. The primary functions of the RBI include-Formulates, implements and monitors the monetary policyRegulator and supervisor of the financial systemManager of Foreign ExchangeIssuer of currencyRegulator and Supervisor of Payment and Settlement SystemsD. Subba Rao was the 22nd Governor of the RBI. His tenure was from 2008-2013. Raghuram Rajan was the 23rd Governor of the RBI. His tenure was from 2013-2016.