Rock cools quickly from melted rock. Rock is recrystallized by extreme pressure. Rock solidifies slowly deep underground. Rock is formed from deposited sediment.
I gave my students this multiple choice question: What is the major process of surface rock formation on volcanoes?

Only one answer is correct among these 4 choices:
- Rock cools quickly from melted rock.
- Rock is recrystallized by extreme pressure.
- Rock solidifies slowly deep underground.
- Rock is formed from deposited sediment.

Could you tell me which one is correct?

Rock cools quickly from melted rock.