A traditional puppetry form of Bihar is known as:

Kathputli
Yakshagana
Bommalattam
Chhau

The correct answer is Kathputli.

Kathoputi is a traditional puppetry form of Bihar. It is a form of shadow puppetry, in which the puppets are made of leather and are manipulated behind a screen. The puppets are moved by strings, and the shadows they cast on the screen are used to tell stories.

Kathoputi is a very old form of puppetry, and it is believed to have originated in India over 2,000 years ago. It is still performed today, and it is a popular form of entertainment in Bihar.

The other options are incorrect. Yakshagana is a traditional dance-drama form of Karnataka. Bommalattam is a traditional puppetry form of Tamil Nadu. Chhau is a traditional dance form of Odisha.

Yakshagana is a form of folk theatre that is performed in the state of Karnataka in India. It is a dance-drama that is accompanied by music and singing. The stories that are told in Yakshagana are often based on Hindu mythology.

Bommalattam is a form of puppetry that is performed in the state of Tamil Nadu in India. It is a shadow puppetry that is performed on a cloth screen. The puppets are made of leather and are manipulated by strings. The stories that are told in Bommalattam are often based on Hindu mythology.

Chhau is a form of dance that is performed in the state of Odisha in India. It is a martial art that is performed with masks. The stories that are told in Chhau are often based on Hindu mythology.