Q:

"Mt. Everest is higher than any other peak in the world. (Convert into superlative degree.) 

• 1
  Mt. Everest is the most high peak in the world.
• 2
  Mt. Everest is the highest peak in the world.
• 3
  Mt. Everest is the only highest peak in the world.
• 4
  Mt . Everest is not the highest peak in the world.