Explanation:

Only statements 1&3 are correct.

• Nanjarayan Bird Sanctuary – The Nanjarayan Bird Sanctuary is located in Tamil Nadu. It is a large shallow wetland that serves as a crucial habitat for a variety of species. The sanctuary acts as a feeding and nesting habitat for resident bird species and is an important feeding ground for migratory birds during their seasonal movements. The sanctuary has been designated as a Ramsar site.

• Kazhuveli Bird Sanctuary – The Kazhuveli Bird Sanctuary is located in Tamil Nadu. The Kazhuveli Bird Sanctuary covers an area of 51.56 square kilometers and includes a brackish shallow lake connected to the Bay of Bengal. It is situated on the Central Asian Flyway, making it an important stopover site for migratory bird species. It is also a Ramsar site.

• Tawa Reservoir – The Tawa Reservoir is located in Madhya Pradesh. The Tawa Reservoir is formed by the confluence of the Tawa and Denwa rivers and is located within the Satpura Tiger Reserve. It serves as an important habitat for aquatic flora and fauna, including many rare and endangered species of plants, reptiles, and insects. The reservoir is a vital habitat for local and migratory birds. It has been designated as a Ramsar site.

Hence option 3rd is correct.