Which of the following language has been mainly used on Ashokan inscriptions?

Prakrit

The correct answer is Option 2- Prakrit

The language mainly used on Ashokan inscriptions is Prakrit.

Ashoka's inscriptions are written in three different languages: Prakrit, Greek, and Aramaic. However, the vast majority of the inscriptions are in Prakrit. Prakrit was a spoken language of the people of India during the Mauryan period. It was a more informal and less standardized language than Sanskrit, which was the language of the elite classes.