Which statement describes metamorphic rock formation

Answer 1

Metamorphic rock formation occurs when existing rocks, either igneous, sedimentary, or other metamorphic rocks, undergo a process of transformation due to exposure to extreme heat, pressure, and/or chemically active fluids over long periods of time. This process alters the mineral composition and structure of the original rock without melting it, resulting in new textures and sometimes new minerals. The conditions that facilitate metamorphism typically occur deep within the Earth's crust or at tectonic plate boundaries.