Which rock type is formed from the metamorphic equivalent of limestone?

The formation of marble from limestone demonstrates the process of metamorphism, where existing rock types are transformed under conditions of heat and pressure. Limestone, which is primarily composed of calcite, undergoes recrystallization during metamorphism, resulting in marble. This rock retains the original chemical composition of limestone but exhibits a distinct texture and crystalline structure due to the changes in pressure and temperature.

Granite is an igneous rock formed from the crystallization of magma, while basalt is also an igneous rock, characterized by its fine-grained texture and formation from rapidly cooled lava. Sandstone is a sedimentary rock made up of sand-sized particles and does not derive from limestone. Each of these other options represents a different process of rock formation, which is why they do not qualify as the metamorphic equivalent of limestone.