Answer:
Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors. Conditions like these are found deep within the Earth or where tectonic plates meet.
Step-by-step explanation:
usgs.gov/faqs/what-are-metamorphic-rocks-0?qt-news_science_products=0#qt-news_science_products
Hope this helps!