Answer: c. minerals it is made of
Step-by-step explanation:
A rock can be define as a naturally occurring solid mass or aggregate of minerals. A mineral is an inorganic element having an orderly internal structure, chemical composition, crystal structure and physical properties. A rock is typically comprises of inorganic minerals as the main ingredient. Commonly found minerals in rocks are feldspar, calcite, mica, quartz, olivine, pyroxene and amphiboles.