The Mt. Everest is situated in the region of Nepal Himalayas.

The Nepal Himalayas is a part of the greater Himalayan mountain range that stretches across several countries including Nepal, India, Bhutan, and Tibet. Mt. Everest, also known as Sagarmatha in Nepal, is the highest peak in the world and is located in the Mahalangur section of the Nepal Himalayas.

Identification of correct option:
To identify the correct option, we need to have a basic understanding of the geography of the Himalayas and the location of Mt. Everest within it.

Geography of the Himalayas:
The Himalayas are a vast mountain range that spans thousands of kilometers and is home to some of the highest peaks in the world. It is formed by the collision of the Indian and Eurasian tectonic plates. The Himalayas are divided into several regions based on their geographical location, such as the Assam Himalayas, Kumaon Himalayas, Nepal Himalayas, and Punjab Himalayas.

Location of Mt. Everest:
Mt. Everest, with an elevation of 8,848 meters (29,029 feet), is located in the Mahalangur section of the Nepal Himalayas. It lies on the border between Nepal and Tibet (China). The summit of Mt. Everest is situated entirely within the territory of Nepal.

Explanation of Incorrect Options:
a) Assam Himalayas: The Assam Himalayas are located in the northeastern part of India, primarily in the state of Assam. Mt. Everest is not situated in this region.

b) Kumaon Himalayas: The Kumaon Himalayas are located in the northern part of Uttarakhand state in India. This region is home to several famous peaks, including Nanda Devi and Trishul, but Mt. Everest is not located here.

d) Punjab Himalayas: The Punjab Himalayas are located in the western part of the Himalayan range, primarily in the state of Himachal Pradesh in India. While this region is home to several beautiful peaks, Mt. Everest is not situated here.

Therefore, the correct option is c) Nepal Himalayas, as it accurately represents the location of Mt. Everest.