Explanation:

• Guru Ghasidas-Tamor Pingla Tiger Reserve is nestled in the Chota Nagpur plateau and partly in the Baghelkhand plateau.

• It has a core habitat of 2,049.2 sq. km (comprising Guru Ghasidas National Park and Tamor Pingla Wildlife Sanctuary) and a buffer zone of 780.15 sq. km.

• It is the third-largest tiger reserve in India followed by Nagarjunasagar-Srisailam (Andhra Pradesh) and Manas (Assam).

• GGTP Tiger Reserve adopts the landscape approach, emphasizing interconnected habitats for biodiversity conservation.

• It ensures ecological connectivity with neighboring tiger reserves like Sanjay Dubri (Madhya Pradesh), Bandhavgarh (Madhya Pradesh), and Palamau (Jharkhand).

Hence option 3rd is correct.