Which phrase provides the best definition of sedimentary rocks?

Question

rocks that form when a solution evaporates
rocks that act as glue to hold larger rocks together
rocks that form from materials that existed in older rocks
rocks that form from broken pieces of younger rocks

Answer 1

The phrase that provides the best definition of sedimentary rocks is:

rocks that form from materials that existed in older rocks.

Sedimentary rocks are primarily formed through the accumulation and compaction of sediments, which can include fragments of older rocks, minerals, and organic materials.