Ram Singh Nair- – Chairperson, Central Board of Direct Taxes

• Senior Indian Revenue Service officer Rani Singh Nair on Monday took over as the new chairperson of the Central Board of Direct Taxes (CBDT), the policy-making body of the Income Tax (I-T) department under the Union Finance Ministry.
• Nair, a 1979-batch IRS officer of the IT cadre, worked as a member at CBDT.
• Nair has been instrumental in framing the procedures and protocols that led to the roll-out of the IDS on June 1 this year. The scheme aims at bringing undisclosed income and assets into the tax net.

Raghuram Rajan–Governor, Reserve Bank of India-

• Raghuram Govinda Rajan is an Indian economist and the Katherine Dusak Miller Distinguished Service Professor of Finance at the University of Chicago Booth School of Business. 
• From September 2013 through September 2016 he was the 23rd Governor of the Reserve Bank of India; in 2015, during his tenure at the RBI, he became the Vice-Chairman of the Bank for International Settlement.

Arvind Panagariya – CEO, NITI Aayog- 

• Arvind Panagariya is an Indian-American economist and a professor of economics at Columbia University, who served as first vice-chairman of the government of India think-tank NITI Aayog between January 2015 and August 2017.

Anurag Thakur- President, Board of Control for Cricket in India- 

• He was the president of the Board of Control for Cricket in India (BCCI) from May 2015 to February 2017 and had to leave that position after the Supreme Court order on BCCI governance.

Hence, the correct answer one is Rani Singh Nair – Chairperson, Central Board of Direct Taxes