The correct answer is: D. Suman Rawat
Suman Rawat is a folk singer from Himachal Pradesh. She is known for her rendition of traditional Himachali folk songs. She has won several awards for her singing, including the Himachal Excellence Award for folk singer of the year 2017.
Vishal Bhardwaj is a music director, film director, and screenwriter. He is known for his work in Hindi cinema. He has won several awards for his work, including the National Film Award for Best Music Direction.
Dr. Sushil Kumar Phull is a professor of Hindi at the University of Delhi. He is a scholar of Hindi literature and has written extensively on the subject. He has also translated several works of Hindi literature into English.
Inderjeet is a singer and actor. He is known for his work in Punjabi cinema. He has won several awards for his singing, including the Filmfare Award for Best Male Playback Singer.
Suman Rawat is the only option who is a folk singer. The other options are not folk singers.