The correct answer is (b) Ajit Kuamr Doval.
Ajit Kuamr Doval is the current National Security Advisor to the Prime Minister of India. He was appointed to the position on 31 May 2014. He is a retired Indian Police Service officer and a former Special Director of the Intelligence Bureau. He is also a member of the National Security Council.
J.N. Dixit was a former Indian diplomat and politician. He served as the National Security Advisor to the Prime Minister of India from 1996 to 1999. He was also the Foreign Secretary of India from 1991 to 1994.
Shiva Shankar Menon was a former Indian diplomat. He served as the National Security Advisor to the Prime Minister of India from 2005 to 2010. He was also the Foreign Secretary of India from 2004 to 2005.
M.K. Narayanan was a former Indian diplomat and intelligence officer. He served as the National Security Advisor to the Prime Minister of India from 1999 to 2004. He was also the Foreign Secretary of India from 1992 to 1995.