As heat flows from the center of the earth into the mantle, it exerts pressure on the earth's crust. That pressure squeezes the earth's surface and bends rock, which results in a

Afold.
Bvolcano.
Cfault.
Dmountain.

Verified Answer :

That pressure squeezes the earth's surface and bends rock, which results in a "mountain," since the pressure makes it so the rocks in question have nowhere to go but "up".