Concept:Igneous rocks are formed from the cooling and solidification of molten magma or lava.Explanation:Granite is produced when molten magma cools slowly beneath the Earth’s surface.This slow cooling allows large crystals to form, which is a key feature of igneous rocks.Limestone and sandstone are sedimentary rocks formed from compressed particles.Coal is an organic sedimentary rock formed from plant remains.Therefore, granite is the correct example of an igneous rock.Answer:A. granite