Question

which example best describes how metamorphic rock forms?
deep below the earths surface, heat and pressure cause a rock to transform to a different rock without melting it.
magma cools to form rocks.
wind breaks down a rock into smaller pieces. over time, the pieces are compacted to form a different rock.
deep below the earths surface rocks melt. the molten rock solidifies when it reaches the surface.

Explanation:

Metamorphic rocks form under heat and pressure without melting. Magma cooling forms igneous rocks. Wind - breakdown and compaction form sedimentary rocks. Molten rock solidifying forms igneous rocks.

Answer:

Deep below the earth's surface, heat and pressure cause a rock to transform to a different rock without melting it.