fragments that broke off of older rocks. magma that cooled deep below a volcano. gases that condensed in the atmosphere. vegetation that decayed in thick layers.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Sandstone and all other types of sedimentary rock are made up of particles. The source materials of these particles consist of
Possibilities:
- fragments that broke off of older rocks.
- magma that cooled deep below a volcano.
- gases that condensed in the atmosphere.
- vegetation that decayed in thick layers.

fragments that broke off of older rocks.