Question

1. choose the best answer.

the source of movement of plates according to the theory of plate tectonics is
volcanic eruptions
thermnal convection
the earths magnetic field
c earthquakes

Explanation:

Plate tectonics theory states that thermal convection in the mantle drives the movement of tectonic plates. Volcanic eruptions and earthquakes are consequences of plate movement, not the source. The Earth's magnetic field is related to the dynamo effect in the outer core, not plate movement.

Answer:

thermal convection