Extreme heat and pressure change rock into metamorphic rock.
Metamorphic rocks metamorphic rocks are the most common rocks in which garnets are found.
Garnets are created by extreme heat and pressure.
how can garnets be formed

A. by radioactive formations
B. extreme cold and pressure
C. raw crystal formations
D. extreme heat and pressure
E. The bending of a ray of light
F. rays or beams
G. Light passing through water
H. solid, liquid, gas