The correct answer is Tripura.

•  'Jamrai Tlang’ mountains are found in the Tripura state. 
  • The Jamrai Tlang Mountains, 46 miles in length, have the highest peak, Betling Sib (3,280 feet).
  • The Tripura Hills, once heavily forested, now have patches of bare soil where the region's sparse populations have practiced jhum.
  • The hills are a series of parallel north-south folds, decreasing in elevation to the south until they merge into the greater Ganges-Brahmaputra lowlands (also called the Eastern Plains).
  • Each successive ridge of hills to the east rises higher than the one before; the low Deotamura Range is followed by the Artharamura, Langtarai, and Sakhan Tlang ranges.

• Mount Everest (also called Sagarmatha in Nepal) is Earth’s highest mountain above sea level, located in the Himalayas between China and Nepal with their borders running across its summit point.
  • Its current official elevation is 8,848m which places it more than 200m above the world’s second-highest mountain, K2, which is 8,611m tall and located in Pakistan-occupied Kashmir.
• Mount Everest gets its English name from Sir George Everest, a colonial-era geographer who served as the Surveyor General of India in the mid-19th century.
  • It was first scaled in 1953 by the Indian-Nepalese Tenzing Norgay and New Zealander Edmund Hillary.