Answer : 3. "National Security Advisor"
Explanation :

According to an order of the Government of India, Ajit Doval has been appointed as the National Security Advisor for the third term. The Appointments Committee of the Cabinet approved Doval's appointment from June 10. Doval is the longest serving NSA. Doval was first appointed to the post in the year 2014, his second term started in 2019 which ended on June 5.