Identify the language which is used for most of the Asokan inscriptions.

Prakrit

The correct answer is Option (2) → Prakrit

Most Asokan inscriptions were in the Prakrit language  while those in the northwest of the subcontinet were in Aramaic and Greek. Most Prakrit inscriptions were written in the Brahmi script; however, some, in the northwest, were written in Kharosthi. The Aramaic and  Greek scripts were used for inscriptions in Afghanistan (northwest).