The correct answer is: A. Purnea.
Vidyapat dance is a folk dance of the Mithila region of India. It is performed in the districts of Purnea, Saharsa, Araria, Kishanganj, Katihar, Darbhanga, Madhubani, Samastipur, and Lakhisarai. The dance is performed by women on special occasions such as weddings, festivals, and religious ceremonies.
The dance is characterized by its intricate footwork and graceful movements. The dancers wear traditional Mithila costumes, which include a sari, blouse, and jewelry. The music for the dance is provided by a group of musicians who play instruments such as the dhol, the tabla, and the sitar.
Vidyapat dance is a beautiful and expressive form of dance that is an important part of the Mithila culture. It is a dance that is full of joy and life, and it is a dance that is sure to leave a lasting impression on anyone who sees it.
The other options are incorrect because they are not districts in the Mithila region of India.