Kanwar Jheel Bird Sanctuary is located at

Begusarai
Bhojpur
Arwal
Darbhanga

The correct answer is: D. Darbhanga

Kanwar Jheel Bird Sanctuary is a bird sanctuary located in Darbhanga district of Bihar, India. It is spread over an area of 100 square kilometers and is home to a variety of birds, including flamingos, pelicans, herons, and storks. The sanctuary is also a popular tourist destination.

The other options are incorrect because:

  • Begusarai is a district in Bihar, India. It is not home to Kanwar Jheel Bird Sanctuary.
  • Bhojpur is a district in Bihar, India. It is not home to Kanwar Jheel Bird Sanctuary.
  • Arwal is a district in Bihar, India. It is not home to Kanwar Jheel Bird Sanctuary.