Assertion: Mahabharata was written originally in Prakrit Language.
Reason: Over the centuries, versions of the epic were written in a variety of languages through an ongoing process of dialogue between peoples, communities, and those who wrote the texts.

The Assertion is incorrect but the Reason is correct.

Originally Mahabharata was written in Sanskrit Language.

The Mahabharata narrates an epic tale centered around a feud for land and power between two factions of cousins, namely the Kauravas and the Pandavas. Both groups were part of the same ruling family known as the Kurus, a lineage that held prominence in one of the janapadas. The epic reaches its culmination in a grand battle, where the Pandavas ultimately emerge as the triumphant side.