The correct answer is (c) Prabhat Kumar.
Prabhat Kumar is a retired Indian Administrative Service officer who has authored several books on public administration, including “Public Service Ethics” (2021). The book is a comprehensive guide to the ethical principles and practices of public service, and it is essential reading for anyone who works in the public sector.
Shashi Tharoor is a former Indian diplomat and politician who has authored several books on history, politics, and culture. Vimal Jain is a retired Indian Administrative Service officer who has authored several books on public administration. Ruskin Bond is an Indian author who has written several books of fiction and non-fiction.