Explanation: Kerala, a state in southern India, is renowned for its lush green landscapes and rich biodiversity. The state is home to several wildlife sanctuaries and national parks, each contributing to the conservation of various species and ecosystems. Among these, Periyar National Park and Wildlife Sanctuary stands out as the most famous and significant.
Periyar National Park and Wildlife Sanctuary is located in the Western Ghats, a UNESCO World Heritage Site, and covers an area of approximately 925 square kilometers. It was established in 1934 and was declared a tiger reserve in 1978 under Project Tiger. The sanctuary is known for its diverse flora and fauna, including the Indian elephant, Bengal tiger, gaur (Indian bison), and numerous species of birds and reptiles.
The sanctuary is also famous for its man-made lake, which was created in 1895 to supply water to the nearby districts. The lake, surrounded by dense forests, provides a unique habitat for various aquatic and terrestrial species. The Periyar Wildlife Sanctuary is a popular destination for wildlife enthusiasts and tourists, offering activities such as boat rides on the lake, elephant safaris, and guided nature walks.
In contrast, the other options listed are also important sanctuaries but do not have the same level of recognition and popularity as Periyar. Chinnar Wildlife Sanctuary, located in Idukki district, is known for the endangered Giant Grizzled Squirrel of India, but it is smaller and less visited. Wayanad Wildlife Sanctuary, situated in the Wayanad district, is known for its scenic beauty and diverse wildlife, but it is not as internationally recognized as Periyar. Idukki Wildlife Sanctuary, part of the larger Idukki district, is also significant but does not have the same level of fame as Periyar.
In summary, Periyar National Park and Wildlife Sanctuary is the most famous sanctuary in Kerala due to its rich biodiversity, historical significance, and extensive conservation efforts. It is a popular destination for wildlife enthusiasts and tourists, making it the correct answer to the question.