Toka, a bamboo clapper, is a unique musical instrument from Assam often used in:

The correct answer is: a) Bihu songs.

Toka is a bamboo clapper, a unique musical instrument from Assam often used in Bihu songs. It is made of two pieces of bamboo that are struck together to produce a sharp, percussive sound. Toka is often used in combination with other instruments, such as the dhol and the pepa, to create a lively and energetic sound.

Bihu is a festival celebrated in the Indian state of Assam. It is a time for people to come together and celebrate the harvest. Bihu songs are often about love, loss, and the beauty of nature. They are usually sung in a group, and the toka is an important part of the music.

The other options are incorrect because:

• Devotional music is not typically associated with the toka.
• Jhumur dance is a folk dance from Jharkhand, India. It is not typically associated with the toka.
• Classical Sattriya music is a classical music genre from Assam. It is not typically associated with the toka.