Question

which of the following occurs because of convection currents? the mantle increases in size. the temperature of the core decreases. tectonic plates move. pressure in the crust increases.

Explanation:

Convection currents in the Earth's mantle cause the movement of tectonic plates. Heat from the Earth's interior makes the mantle material less dense and rise, then cool and sink, creating a cycle that drives plate - motion. The other options are not directly related to convection currents. The mantle doesn't increase in size due to convection currents, the core's temperature doesn't decrease because of them, and pressure in the crust is not mainly due to convection currents.

Answer:

Tectonic plates move.