What rock-forming process occurs when hot magma forces its way into rock?
a. regional metamorphism
b. biochemical sedimentation
c. contact metamorphism
d. deposition

The answer is; C

When magma gets in contact with a rock such as sedimentary rock, it changes its mineralization and texture due to heat. Sedimentary rock will change to slate, limestone to marble. The other type of metamorphism is regional metamorphisms and occurs in rocks over a wide area, deep in the earth's crust, due to immense pressure and temperature.  

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