igneous sedimentary magma metamorphic
I gave my students this multiple choice question: As some organisms die, their remains become buried by mud and are eventually compressed into a type of rock. Which of these is a rock type that forms from this process?

Only one answer is correct among these 4 choices:
- igneous
- sedimentary
- magma
- metamorphic

Could you tell me which one is correct?

sedimentary