The correct answer is D. All of these.
Phag, Nachari, and Purbi are all ragas (music notes) specific to Bihar.
Phag is a folk song genre and a musical raga associated with the spring festival of Holi. It is a lively and energetic genre of music that is often used to accompany dancing.
Nachari is a classical raga that is associated with the monsoon season. It is a slow and lyrical raga that is often used to express feelings of love and longing.
Purbi is a folk song genre and a musical raga that is associated with the eastern region of India. It is a lively and energetic genre of music that is often used to accompany dancing.
All three of these ragas are an important part of the cultural heritage of Bihar. They are used in a variety of contexts, including religious ceremonies, weddings, and festivals.