Concept:Each Indian state has a distinct traditional dance form. The correct pair matches a state with its famous dance.Explanation:Option A: Karnataka's folk dance is Kunitha, not Kathak. So incorrect.Option B: Assam's most popular dance is Bihu. This is a correct match.Option C: Orissa is known for Odissi, not Bharatnatyam. So incorrect.Option D: Tamil Nadu's classical dance is Bharatnatyam, not Lavani (which is from Maharashtra). So incorrect.Thus, only option B is correct.Answer:B. Assam-Bihu