उत्तर : 4. "पक्षी अभ्यारण्य"
व्याख्या :

1. Kanak Sagar is a bird sanctuary. It is situated in Bundi district of Rajasthan.

2. There is also a town named after the lake. Many migratory birds visit here during the year such as Bar-headed Goose and Demoiselle Crane.