The correct answer is: a) Tea tribes of Assam.
Jhumur dance is a folk dance of the tea tribes of Assam. It is a group dance performed by both men and women. The dance is characterized by its fast tempo and intricate footwork. It is usually performed during festivals and other special occasions.
The Bodo community is a tribal community found in Assam and other parts of northeastern India. The Mising community is another tribal community found in Assam. The Dimasa community is a tribal community found in Assam and Nagaland.
Jhumur dance is not primarily associated with any of these communities. It is primarily associated with the tea tribes of Assam.