Which one of the following protected areas is well-known for the conservation of a sub-species of the Indian swamp deer (Barasingha) that thrives well on hard ground and is exclusively graminivorous?

1. The question asks to identify the protected area known for the conservation of a specific sub-species of the Indian swamp deer (Barasingha) adapted to hard ground and being exclusively graminivorous. 2. This description perfectly matches the Southern Swamp Deer (*Rucervus duvaucelii branderi*), which is found only in Kanha National Park, Madhya Pradesh. 3. This particular sub-species adapted to the unique hard ground habitat of the central Indian highlands within Kanha and primarily feeds on grasses. 4. Kanha National Park is celebrated for its successful conservation efforts that saved this sub-species from near extinction. 5. Manas National Park (Assam) has the Eastern Swamp Deer (*R. d. ranjitsinhi*), associated with swampy areas. 6. Mudumalai Wildlife Sanctuary (Tamil Nadu) is not known for Barasingha. 7. Tal Chhapar Wildlife Sanctuary (Rajasthan) is famous for blackbucks, not Barasingha. 8. Therefore, Kanha National Park is the correct answer.