Explanation:

- The Arthashastra is the correct answer.

- It is an ancient Indian text on statecraft, economic policy, and military strategy, composed in Sanskrit.

- Traditionally attributed to Kautilya, also known as Chanakya, who was an advisor to the first Mauryan emperor, Chandragupta.

- Rigveda:

- One of the oldest known Vedic Sanskrit texts.

- Primarily a collection of hymns dedicated to various deities.

- Puranas:

- Ancient Hindu texts containing mythological stories, traditions, and genealogies.

- Focus on cosmology, stories of gods, and philosophical teachings.

- Charaka Samhita:

- An ancient Indian text on Ayurveda, the science of life and medicine.

- Attributed to the scholar Charaka and focuses on internal medicine.