'Rig Veda' was originally composed in which one of the following languages?

The Rig Veda was originally composed in Vedic Sanskrit, an early form of the Sanskrit language. It is the oldest of the four Vedas, composed orally between approximately 1500-1000 BCE. Brahmi is a script (writing system), not a language. Pali and Prakrit are later languages associated with Buddhist and Jain texts respectively. The Rig Veda was transmitted orally for centuries before being written down.