Which of the following is a folk song genre popular in parts of West Bengal, Assam and Bangladesh?

Bhawaiya

The correct answer is Option (3) - Bhawaiya

The folk song genre popular in parts of West Bengal, Assam, and Bangladesh is "Bhawaiya." Bhawaiya songs are traditional folk songs sung primarily in the northern districts of West Bengal, parts of Assam, and neighboring regions of Bangladesh. These songs are often accompanied by simple musical instruments and are known for their lyrical themes, which typically revolve around love, nature, and rural life.