crystallized into natural glass. exposed to great temperature. melted into liquid magma. broken down by weathering.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: In the rock cycle, sedimentary rock forms when rock is
Possibilities:
- crystallized into natural glass.
- exposed to great temperature.
- melted into liquid magma.
- broken down by weathering.

broken down by weathering.