The correct answer is C. Metamorphic rocks.
Metamorphic rocks are formed when existing rocks are subjected to heat and pressure, causing them to change their composition, texture, and structure. This can happen when rocks are buried deep underground, when they are involved in mountain building, or when they are exposed to magma or lava.
Sedimentary rocks are formed when pieces of other rocks, minerals, or organic matter are transported by water, wind, or ice and then deposited in layers. Over time, these layers are compacted and cemented together to form sedimentary rocks.
Igneous rocks are formed when magma or lava cools and solidifies. Magma is molten rock that is found beneath the Earth’s surface, while lava is magma that has reached the Earth’s surface.
None of these is the correct answer because it does not describe the formation of metamorphic rocks.