The original Buddhist religious texts had been written in

The original Buddhist religious texts had been written in Correct Answer Pali

The sacred book of Buddhism is called the Tripitaka (called Tipitaka in Pali). It is also called the Pali Canon, after the language in which it was first written. The ancient Indian language, Pali, is very close to the language that the Buddha himself spoke. Buddhism is based on Buddha's teachings.

Related Questions

In which language were the Buddhist-texts 'Pitakas' composed?
The greatest Buddhist commentator of the Buddhist canonical literature has been
The Buddhist Doctrines were written in