convection currents beneath Earth's crust. the rotation of Earth on its axis. the gradual sinking of Earth's crust. heat from the Sun warming Earth.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: The primary cause of continental drift, earthquakes, and volcanic eruptions is
Possibilities:
- convection currents beneath Earth's crust.
- the rotation of Earth on its axis.
- the gradual sinking of Earth's crust.
- heat from the Sun warming Earth.

convection currents beneath Earth's crust.