Question

Sandstone and all other types of sedimentary rock are made up of particles. The source materials of these particles consist of

O A. fragments that broke off of older rocks.
O B. magma that cooled deep below a volcano.
C. gases that condensed in the atmosphere.
O D. vegetation that decayed in thick layers.

Answer 1

A. fragments that broke off of older rocks.

Step-by-step explanation:

Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. They form from deposits that accumulate on the Earth's surface. Sedimentary rocks often have distinctive layering or bedding. Many of the picturesque views of the desert southwest show mesas and arches made of layered sedimentary rock.