Magma or lava is cooled. Materials are pressed together. Chemical reactions change minerals. Earthquakes cause small pieces to fall.
I gave my students this multiple choice question: How are sedimentary rocks made?

Only one answer is correct among these 4 choices:
- Magma or lava is cooled.
- Materials are pressed together.
- Chemical reactions change minerals.
- Earthquakes cause small pieces to fall.

Could you tell me which one is correct?

Materials are pressed together.