Answer : 2. "Dr. Pramod Kumar Mishra"
Explanation :

Former IAS officer Dr. Pramod Kumar Mishra has been reappointed as the Principal Secretary to Prime Minister Narendra Modi. According to an order issued by the Department of Personnel and Training, the Appointments Committee of the Cabinet (ACC) has approved the appointment of Dr. Mishra to the post from June 6. He served as Additional Principal Secretary to the Prime Minister during 2014-19.