What are the two conditions needed for a metamorphic rock to form.?

Metamorphic rocks form under two key conditions: high temperature and high pressure. These conditions typically occur deep within the Earth's crust, where pre-existing rocks, known as parent rocks, undergo physical and chemical changes due to tectonic activity or the intrusion of hot magma. Additionally, the presence of chemically active fluids can facilitate these transformations, altering the mineral composition and structure of the rocks.