Question

how do tectonic plates move?
expanding with the saturation of water
magnetic field
sliding on the heated asthenosphere

Explanation:

Tectonic plates move by sliding on the asthenosphere, which is a layer of the Earth's mantle that is partially molten and allows the plates to move. The other options are incorrect: water saturation does not cause plate movement, and magnetic fields do not drive plate motion.

Answer:

C. sliding on the heated asthenosphere (assuming the third option is labeled C; if the options are unlabeled, "The third option (sliding on the heated asthenosphere)")