The correct answer is: a) Phawngpui (Blue Mountain).
Phawngpui (Blue Mountain) is the highest peak in Mizoram, India. It is located in the state’s easternmost district, Serchhip. The mountain is part of the Lushai Hills and is a popular tourist destination.
Kangchenjunga is the third highest mountain in the world, after Mount Everest and K2. It is located in the Himalayas, on the border between Nepal and India. The mountain is part of the Kangchenjunga Himal sub-range.
Nanda Devi is the second highest mountain in India, after Kamet. It is located in the Garhwal Himalayas, in the Indian state of Uttarakhand. The mountain is part of the Nanda Devi National Park.
Mount Everest is the highest mountain in the world, located in the Mahalangur Himal sub-range of the Himalayas. The international border between Nepal (Sagarmatha Zone) and China (Tibet Autonomous Region) runs across its summit point.