The correct answer is: a) Tiwa (Lalung).
Jonbeel Mela is a unique festival celebrated by the Tiwa (Lalung) community of Assam, India. It is a three-day festival that takes place in the month of November. The festival is a celebration of the harvest and is also a time for the community to come together and socialize.
One of the unique aspects of Jonbeel Mela is the barter system that is used during the festival. Instead of using money, the Tiwa (Lalung) people use goods and services to trade with each other. This barter system is a way for the community to maintain its traditional way of life and to avoid the use of money.
The festival is also a time for the Tiwa (Lalung) people to pay their respects to their ancestors. They do this by performing traditional dances and songs. The festival is a time for the community to come together and celebrate their culture and heritage.
The other options are incorrect because they are not the communities that celebrate Jonbeel Mela. Mising, Karbi, and Dimasa are all communities that live in Assam, but they do not celebrate Jonbeel Mela.