The Sabri brothers, Aziz Warsi and Nusrat Fateh Ali Khan are associated with which singing style?

Qawwali

The correct answer is Option (1) - Qawwali

Ustad Nusrat Fateh Ali Khan and Aziz Warsi was Pakistani songster, tunesmith, and music director. He was primarily a songster of qawwali - a form of Sufi spiritual music. Occasionally called the" Shahenshah-e-Qawwali"( the King of lords of Qawwali), he's considered by The New York Times to be the topmost qawwali songster of his generation.