convection currents in the mantle volcanic and seismic activity in the crust strong winds and storms rotation of the solid core
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: What causes the tectonic plates of Earth to continually move?
Possibilities:
- convection currents in the mantle
- volcanic and seismic activity in the crust
- strong winds and storms
- rotation of the solid core

convection currents in the mantle