The correct answer is a) Thattekad Bird Sanctuary.
Thattekad Bird Sanctuary is a bird sanctuary located in the Alappuzha district of Kerala, India. It is one of the most important bird sanctuaries in India and is known for its variety of bird species. The sanctuary is home to over 200 species of birds, including migratory birds from Siberia and Central Asia. It is also home to a variety of other wildlife, including reptiles, amphibians, and mammals.
The sanctuary is located on the banks of the Vembanad Lake and is covered by a variety of vegetation, including forests, wetlands, and grasslands. The sanctuary is a popular tourist destination and is a great place to go birdwatching.
The other options are incorrect because they are not bird sanctuaries.
b) Mangalavanam Bird Sanctuary is a botanical garden located in the city of Kochi, Kerala, India. It is home to a variety of plants and trees, including a number of rare and endangered species. The garden is also home to a variety of birds, but it is not a bird sanctuary.
c) Kumarakom Bird Sanctuary is a bird sanctuary located in the Kumarakom village in the Kottayam district of Kerala, India. It is home to a variety of bird species, including migratory birds from Siberia and Central Asia. The sanctuary is also home to a variety of other wildlife, including reptiles, amphibians, and mammals. However, it is not as well-known as Thattekad Bird Sanctuary.
d) Kadalundi Bird Sanctuary is a bird sanctuary located in the Kadalundi village in the Kozhikode district of Kerala, India. It is home to a variety of bird species, including migratory birds from Siberia and Central Asia. The sanctuary is also home to a variety of other wildlife, including reptiles, amphibians, and mammals. However, it is not as well-known as Thattekad Bird Sanctuary.