Which language was used in the inscriptions found in Pataliputra during Asoka's time?

Prakrit

Historians face various challenges when interpreting historical events. For instance, if a king's commands were inscribed on natural rocks near cities or important routes, it raises questions about whether illiterate passers-by would have understood these messages. Moreover, not everyone across the subcontinent may have comprehended the Prakrit language used in Pataliputra. Additionally, determining whether the king's orders were effectively followed can be difficult to ascertain.