The unique floating stage used for some Lai Haraoba dance performances is called:

The correct answer is: b) Phung Thang.

A Phung Thang is a unique floating stage used for some Lai Haraoba dance performances. It is made of bamboo and wood and is decorated with flowers and leaves. The Phung Thang is usually located in a pond or lake and is surrounded by spectators. The Lai Haraoba dance is a traditional dance of Manipur, India. It is performed to celebrate the arrival of spring and the harvest. The dance is performed by both men and women and is accompanied by music and singing.

The other options are incorrect for the following reasons:

• Natya mandapa is a traditional dance hall in India. It is usually made of stone or wood and is decorated with sculptures and paintings.
• Kalamandalam is a school of performing arts in Kerala, India. It is known for its training in classical Indian dance and music.
• Rangshala is a theater or auditorium. It is usually used for performances of plays, operas, and other theatrical productions.