The ambassador who was sent to the court of Chandragupta Maurya by the Greek ruler Seleucus Nicator is _______.

Megasthenes

The correct answer is Option 4- Megasthenes

Megasthenes was a Greek historian and diplomat sent by the Greek ruler Seleucus Nicator, who served as an ambassador to the Mauryan Empire during the reign of Chandragupta Maurya. He wrote an influential book titled "Indica," which provided valuable insights into the culture, society, and political administration of ancient India during the Mauryan period.

He  mentioned seven classes of Indian society in his book "Indica." These classes were:

-Philosophers
-Agriculturists
-Herdsmen
-Artisans
-Soldiers
-Overseers
-Counsellors