Correct Answer:
Option C - Intrusive igneous rocks make up the majority of igneous rock and are formed from magma that cools and solidifies within the crust of a planet, surrounded by pre-existing rock; the magma cools slowly and, as a result these rocks are coarse-grained.
C. Intrusive igneous rocks make up the majority of igneous rock and are formed from magma that cools and solidifies within the crust of a planet, surrounded by pre-existing rock; the magma cools slowly and, as a result these rocks are coarse-grained.