Explanation:

• India has some of the world's most biodiverse regions. The political boundaries of India encompass a wide range of biomes–desert, high mountains, highlands, tropical and temperate forests, swamplands, plains, grasslands, areas surrounding rivers, as well as island archipelago. 
• It hosts 4 biodiversity hotspots:the Himalayas, the Western Ghats, the Indo-Burma region and the Sundaland (Includes Nicobar group of Islands).These hotspots have numerous endemic species.
• Pachmarhi (Madhya Pradesh) and sundarbans doesn’t fall under the area covered by the above hotspots. Hence only Nanda Devi of Himalayas and Great Nicobar of Sndaland is correct.