The correct answer is D. Chamba.
Nuala dance is a folk dance of the Chamba district of Himachal Pradesh. It is a traditional dance performed by women during the harvest festival of Baisakhi. The dance is performed in a circle, with the women holding hands and swaying their bodies to the rhythm of the music. The dance is accompanied by singing and drumming, and the women often wear traditional costumes and jewelry.
Option A, Kullu, is incorrect because Nuala dance is not a folk dance of the Kullu district. The Kullu district is home to many other traditional dances, such as the Kullu Dussehra dance and the Kullu Shikari dance.
Option B, Una, is incorrect because Nuala dance is not a folk dance of the Una district. The Una district is home to many other traditional dances, such as the Una Naati dance and the Una Dhamaal dance.
Option C, Bilaspur, is incorrect because Nuala dance is not a folk dance of the Bilaspur district. The Bilaspur district is home to many other traditional dances, such as the Bilaspur Jhumar dance and the Bilaspur Ghoomar dance.