Final answer:
Mountains are created by the folding and faulting of the Earth's crust due to the collision and movement of lithospheric plates.
Step-by-step explanation:
The movement of lithospheric plates creates mountains through the processes known as folding and faulting. Folding occurs when tectonic plates collide and push up against each other, resulting in the bending and uplift of layers of the Earth's crust. One can observe this phenomenon in mountain ranges like the Alps, which formed due to the collision between the African and Eurasian plates.
On the other hand, faulting happens when the Earth's crust breaks due to the tectonic forces and the broken crust blocks move relative to each other. This occurs along fault zones where plates can slide past each other or pull apart. This process drags some rock deep below the surface and raises other folds to heights of many kilometers, creating mountains.