The correct answer is option 2: Indica.

Indica is a book written by the Greek historian Megasthenes, who was sent as an ambassador to the court of the Mauryan emperor Chandragupta Maurya. In his book, Megasthenes described the Mauryan society and divided it into seven classes based on occupation.

While Ashoka`s Edicts (option 1) do provide valuable insight into the governance and policies of the Mauryan Empire, they do not specifically mention the division of society into seven classes.

Kautilya`s Arthashastra (option 3) is an ancient Indian treatise on statecraft and economics, written by Chanakya, who was an advisor to Chandragupta Maurya. While the Arthashastra does discuss various aspects of society and administration, it does not mention a specific division of society into seven classes.

Vishnu Purana (option 4) is a Hindu scripture that primarily deals with mythology, cosmology, and genealogies of gods and kings. It does not provide information about the division of the Mauryan society.

Therefore, option 2, Indica, is the correct answer as it directly refers to the book written by Meg