The correct answer is Brahmi.

• The Edicts of Ashoka are a collection of more than thirty inscriptions on the pillars, as well as boulders and cave walls.
• The edicts describe in detail Ashoka's view about dhamma, an earnest attempt to solve some of the problems that a complex society faced.
• These edicts were deciphered by British archaeologist and historian James Prinsep.
• These inscriptions proclaim Ashoka's adherence to the Buddhist philosophy which, as in Hinduism, is called dharma, "Law".

• The inscriptions of Ashoka are found with the following scripts:
  • Magadhi Prakrit using Brahmi Script - in the central and eastern part of India
  • Prakrit using Kharoshti script - in north and northwest
  • Greek and Aramaic - in northwest India

Ashokan inscriptions are classified as below:

• Major Rock Edicts: 14 Edicts and 2 separate ones found in Odisha; in Prakrit and Greek. 
• Major Pillar Edicts: 7 Edicts, inscribed at the end of Ashoka's reign; in Prakrit.
• Minor Rock Edicts: Edicts inscribed at the beginning of Ashoka's reign; in Prakrit, Greek and Aramaic.
• Minor Pillar Edicts: Schism Edict, Queen's Edict, Rummindei Edict, Nigali Sagar Edict; in Prakrit.