Question

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Explanation:

The diagram shows circular, upward and downward flow patterns within Earth's mantle, which are characteristic of convection currents. These currents transfer heat and create the force that moves tectonic plates, making them the driving force behind plate movement. Earthquakes and volcanoes are effects of plate movement, while plate tectonics is the overall theory of plate motion, not the driving force itself.

Answer:

convection currents