The correct option is 1, 3, and 4 because Bandipur, Manas, and Sunderbans are established as Tiger Reserves under India's Project Tiger initiative, aimed at conserving the dwindling population of tigers and their habitats. On the other hand, Bhitarkanika, primarily known for its unique mangrove ecosystem and saltwater crocodiles, was not designated as a Tiger Reserve, reflecting the importance of diverse conservation efforts tailored to different ecological contexts in India. Understanding the distinction and purposes of these protected areas is crucial for UPSC aspirants, as it highlights India's multifaceted approach to wildlife conservation and biodiversity management.