The correct answer is: a) Transgender community.
The Koovagam festival is a unique celebration primarily associated with the transgender community. It is held annually in the Indian state of Tamil Nadu, and is believed to have originated over 2,000 years ago. The festival is a time for transgender people to come together and celebrate their identity, and to pay homage to the deity Aravan, who is believed to be the transgender son of the Hindu god Krishna.
During the festival, transgender people dress in traditional wedding attire and participate in a number of rituals, including a mock wedding ceremony. The festival is a time for transgender people to feel accepted and celebrated, and to connect with their culture and heritage.
The other options are incorrect because they are not primarily associated with the transgender community. Option b, fisherfolk, is incorrect because the Koovagam festival is not specifically associated with fisherfolk. Option c, farming community, is incorrect because the Koovagam festival is not specifically associated with farmers. Option d, tribal communities, is incorrect because the Koovagam festival is not specifically associated with tribal communities.