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

Fact 2: Slate is a metamorphic rock.

Given the two facts above, answer the question "what does extreme heat and pressure change rock into?" with the following options: 
- soils
 - calcite
 - vapor
 - weathering
 - complex
 - h2o
 - slate
 - cracks


 

       slate  