The correct answer is: Folk song.
Ragni is a form of folk song that is popular in the Indian state of Haryana. It is typically sung by women and is often accompanied by a drum. The songs are usually about love, loss, and other aspects of everyday life.
Classical music is a form of music that is based on a set of rules and traditions. It is typically performed by trained musicians and is often associated with high culture.
Instrumental performance is a type of music that is performed without vocals. It can be performed on a variety of instruments, such as the violin, the piano, and the guitar.
Dance-drama is a type of performance that combines dance and drama. It is often used to tell stories or to express emotions.
In conclusion, the correct answer to the question “Haryana is known for its tradition of ‘ragni’, which is a form of:” is Folk song.