intrusive igneous. clastic sedimentary. metamorphic. volcanic.
I gave my students this multiple choice question: A scientist categorized a rock as an extrusive igneous rock. Another scientist could accurately categorize the same rock as

Only one answer is correct among these 4 choices:
- intrusive igneous.
- clastic sedimentary.
- metamorphic.
- volcanic.

Could you tell me which one is correct?

volcanic.