It Is Believed That the Force That Drives the Movement

Multiple Choice

It is believed that the force that drives the movement of the Earth's tectonic plates is:

A) tidal forces from the Moon's gravitational pull.
B) heat currents, known as convection cells, within the liquid portion of the Earth's core.
C) heat currents, known as convection cells, within the Earth's mantle.
D) centrifugal forces from the speed of Earth's rotation.