Which best explains how tectonic plates move?

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1 point
Convection currents in Earth's mantle pull, push and slide tectonic plates
Continental crust drifted apart over time due to ocean currents causing other plates to collide
The tectonic plates move due to the force of gravity pulling, pushing and sliding the plates.
None of these correctly explain the cause of the Plate Tectonic Theory

The correct answer is: Convection currents in Earth's mantle pull, push and slide tectonic plates.