The authorship of the Mahabharata, one of the two major Sanskrit epics of ancient India, is a topic of debate among scholars. However, traditionally, it is believed that the Mahabharata was written by a Brahmin.

Brahmins as authors:

Brahmins were the highest caste in ancient India and were considered the most learned and knowledgeable. They were responsible for preserving and transmitting sacred knowledge, including the Vedas, which form the basis of Hinduism. The Mahabharata is also considered to be a sacred text and is believed to have been written by a Brahmin.

Evidence for Brahmin authorship:

- The language and style of the Mahabharata suggest that it was written by someone with a deep knowledge of Sanskrit literature and grammar, which were traditionally taught to Brahmins.
- The Mahabharata contains numerous references to Vedic rituals, which were performed by Brahmins.
- The author of the Mahabharata is referred to as "Vyasa," which is a Brahmin name.

Other theories:

While the traditional belief is that the Mahabharata was written by a Brahmin, some scholars have suggested that it may have been written by a group of people or over a period of time. Some also suggest that it may have been edited and revised multiple times over the centuries.

Conclusion:

In conclusion, while there may be debate among scholars about the authorship of the Mahabharata, the traditional belief is that it was written by a Brahmin. The language, style, and content of the text all suggest a deep knowledge of Vedic rituals and Sanskrit literature, which were traditionally taught to Brahmins.

Option c vaishaya is the right answer.