Correct option (c) Special Secretary,
Explanation:
Department of Economic Affairs In April 2017, The Union government constituted a time-bound interdisciplinary committee to come up with an action plan for dealing with virtual currencies so as to fix the regulatory gaps in the existing framework governing virtual currencies. The nine-member inter-disciplinary committee is chaired by Dinesh Sharma, special secretary in the economic affairs department.
The committee also have representatives from the Department of Economic Affairs, Department of Financial Services, Department of Revenue, Ministry of Home Affairs, IT ministry, Reserve Bank of India, NITI Aayog and State Bank of India.