Fact 1: Extreme heat and pressure change rock into metamorphic rock.

Fact 2: Marble is a metamorphic rock.

Given the two facts above, answer the question "What can change rock into marble?" with the following options: 
- extreme heat and pressure
 - heat is produced
 - air pressure
 - It gets heated up
 - barometric pressure
 - slow heat transfer
 - heat production
 - exposure to cold


 

 extreme heat and pressure        