what kind of texture do extrusive igneous rocks have? a. fine - grained b. coarse - grained c. scaly

what kind of texture do extrusive igneous rocks have? a. fine - grained b. coarse - grained c. scaly
Answer
Brief Explanations:
Extrusive igneous rocks form when magma erupts onto the Earth's surface and cools quickly. Quick - cooling does not allow large crystals to form, resulting in fine - grained texture.
Answer:
A. Fine - grained