Ok let's start let start, so as far as I know it is connected between Indian and Eurasian plate.
How Mt. Everest is formed?
What is convergent boundary?
I see, so the boundary form must be convergent
Convergent boundary or known as destructive boundary happen when a two or more lithospheric plates collide.
How Mt. Everest is formed?
Ooh I see then this means that this subduction can cause earthquakes?
Yes, one plate eventually slides beneath the other this process is called subduction
Yes, now lets get back to the question of How Mt. Everest is formed?
How Mt. Everest is formed?
Yes, so my theory of why is Mt. Everest is the tallest in the world is because it still hasn't stop growing.
So now that we know what convergent boundary means this just proves that Indian and Eurasian plate did collided.
In summary The mountain was formed by the upward force generated when the Indian and Eurasian tectonic plates collided, pushing up the rocks that formed the highest mountain on Earth.