Dudhwa National Park was declared a 'Project Tiger Reserve' in which year?

Answer: Option D

Dudhwa became a tiger reserve in 1979. The area was established in 1958 as a wildlife sanctuary for swamp deer. Thanks to the efforts of Billy Arjan Singh the area was notified as a national park in January 1977. In 1987, the park was declared a tiger reserve and brought under the purview of the 'Project Tiger'. Together with the Kishanpur Wildlife Sanctuary and the Katarniaghat Wildlife Sanctuary it forms the Dudhwa Tiger Reserve.