The correct answer is (a) Mohinder Puri.
Mohinder Puri is a retired Indian Army officer who served as the Director General of Military Operations (DGMO) from 1999 to 2000. He is the author of the book ‘Kargil: Turning the Tide’, which is a first-hand account of the 1999 Kargil War.
Anita Nair is an Indian author who has written several novels, short stories, and essays. She is not the author of the book ‘Kargil: Turning the Tide’.
Chetan Bhagat is an Indian author who has written several novels that have been best-sellers in India. He is not the author of the book ‘Kargil: Turning the Tide’.
Durjoy Datta is an Indian author who has written several young adult novels. He is not the author of the book ‘Kargil: Turning the Tide’.