What type of rock is formed from the cooling of magma?

Igneous rock is formed from the cooling and solidification of magma or lava. When magma rises to the Earth's surface and erupts as lava, it cools quickly in the open air, resulting in volcanic rocks, which are a type of igneous rock. Alternatively, if magma cools slowly beneath the Earth's surface, it forms intrusive igneous rocks, characterized by larger crystals. The fundamental process behind igneous rock formation is the crystallization of minerals as the molten rock transitions from a liquid state to a solid form. This distinguishes igneous rocks from other types, such as sedimentary rocks, which are formed from the compaction of sediments, and metamorphic rocks, which originate from the transformation of existing rocks under heat and pressure. Coal is also not an igneous rock; it is a type of sedimentary rock formed from accumulated organic material. Thus, the only option that accurately describes rock formed from magma is igneous rock.