Question

in the rock cycle, what process transforms existing rocks through heat and pressure without melting? sedimentary rock formation metamorphic rock formation weathering igneous rock formation

Explanation:

Metamorphism is the process in the rock - cycle where existing rocks are transformed by heat and pressure without melting, resulting in metamorphic rocks. Sedimentary rock formation involves the accumulation and compaction of sediments. Weathering is the breaking down of rocks at the Earth's surface. Igneous rock formation occurs from the cooling and solidification of magma or lava.

Answer:

Metamorphic rock formation