Which of the following is the earliest form of Veda?

The correct answer is Option (4) - Rig Veda

The Rig Veda is the earliest of the four Vedas, which are ancient sacred texts of Hinduism. It is considered the oldest known text in any Indo-European language, dating back to approximately 1500–1200 BCE. The Rig Veda is a collection of hymns, mantras, and prayers composed in early Sanskrit and is revered as a foundational scripture in Hinduism. It contains hymns dedicated to various deities, philosophical insights, and insights into the early religious and cultural practices of ancient India.