The correct answer is option 4 - Kanha tiger reserve. Option 1 - Named tiger reserve does not provide any specific information about a particular tiger reserve. Option 2 - Ranthambhore tiger reserve is a well-known tiger reserve in India, but it does not have `Bhoorsingh the Barasingha` as its official mascot. Option 3 - Panna tiger reserve is another well-known tiger reserve, but it also does not have `Bhoorsingh the Barasingha` as its official mascot.

Kanha tiger reserve, located in Madhya Pradesh, is home to a unique species called Barasingha, also known as swamp deer. `Bhoorsingh the Barasingha` is the official mascot of Kanha tiger reserve. The Barasingha is a rare and endangered species, and the presence of this mascot signifies the importance and conservation efforts of this species in Kanha tiger reserve. It is important to have an official mascot to create awareness and promote the conservation of wildlife in national parks and reserves.