Sedimentary Rocks Are Formed When Small Particles Are Cemented Together.

• A. Melted
• B. Transformed by Heat
• C. Cemented Together
• D. Crystallized

Answer: (C)

Sedimentary rocks form when loose particles settle together and become solid through cementation, where minerals precipitate from groundwater and glue the grains in place. This binding process is what turns loose sediment into rock, unlike melting (which would create igneous rocks) or transformation by heat (which creates metamorphic rocks). Crystallization refers to minerals forming by cooling or precipitation, not the specific way sediment grains are held together in sedimentary rocks. So cemented together best describes how these rocks come to be, with sandstone and similar rocks forming when grains are cemented by mineral cement.