has large oil reserves. reaches deep into Earth. is rich in precious metals. is heated by nearby magma.
I gave my students this multiple choice question: Some regions produce large amounts of geothermal energy. This energy production indicates that the crust in these regions

Only one answer is correct among these 4 choices:
- has large oil reserves.
- reaches deep into Earth.
- is rich in precious metals.
- is heated by nearby magma.

Could you tell me which one is correct?

is heated by nearby magma.