Answer : 3. "Bihar"
Explanation :

Bihar's only tiger reserve, Valmiki Tiger Reserve, uses green energy to provide water to wild animals, including tigers, and their prey in the scorching summers. Established in 1990 and declared a wildlife sanctuary in 1978, the Valmiki Tiger Reserve comprises the Valmiki National Park and the Valmiki Wildlife Sanctuary. Located on the banks of the Gandak River, it shares borders with Nepal's Royal Chitwan National Park and Parsa Wildlife Sanctuary. Bihar government is waiting for NTCA's approval to declare Kaimur Wildlife Sanctuary as the second tiger reserve of the state after VTR.