Which one among the following is the largest tiger reserve of India in

Which one among the following is the largest tiger reserve of India in terms of area of the core/critical tiger habitat ?

Manas
Pakke
Nagarjunasagar Srisailam
Periyar
This question was previously asked in
UPSC NDA-1 – 2018
The correct answer is (C) Nagarjunasagar Srisailam. The Nagarjunasagar Srisailam Tiger Reserve, spread across Andhra Pradesh and Telangana, has the largest core/critical tiger habitat area among the options listed and in India. Its core area is approximately 2595 square kilometers.
Tiger reserves in India are categorized into core/critical tiger habitat and buffer areas. The core area is legally protected and managed for tiger conservation, free from human activities.
The core areas of the other listed reserves are significantly smaller: Manas (Assam) – approx. 950 sq km, Pakke (Arunachal Pradesh) – approx. 683 sq km, Periyar (Kerala) – approx. 925 sq km. The total area (core + buffer) of Nagarjunasagar Srisailam is also very large, making it the largest tiger reserve overall in India by total area as well.