Option d is the correct answer. The Arthashastra of Kautilya is a book on Principles of Government. It is an ancient Indian Sanskrit treatise encompassing statecraft, political science, economics, and military strategy. Traditionally attributed to Kautilya, it offers insights into governance, law, ethics, economics, diplomacy, and more. With a wide scope, it addresses various aspects of state administration and societal welfare. It is believed to have been composed between the 2 nd century BCE and 3rd century CE and has resurged in contemporary global discourse on power and governance.