The traditional folk dance 'Bihu' is associated with which of the following Indian states?

Bihu is the indigenous folk dance and harvest festival of Assam. It is performed during the three Bihu festivals — Rongali (Bohag) Bihu in mid-April, Kongali (Kati) Bihu in mid-October, and Bhogali (Magh) Bihu in mid-January — marking the Assamese New Year and the spring season. Hence, option C is correct.