Answer:
Metamorphism transforms igneous, sedimentary, or metamorphic rocks.
Explanation:
The process of metamorphism involves the application of extreme heat and pressure to an existing rock. The original rock can be sedimentary, igneous, or even another metamorphic rock that has already been altered.
After the metamorphic process, the rock has been partially melted to the point where it become ductile and has changed its form and expression.