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o correctly classify a rock as igneous, sedimentary, or metamorphic, what would a geologist need to know?




A

color of the rock



B

the hardness of the rock



C

how the rock formed



D

how the rock breaks apart

Verified Answer :


C. 
how the rock formed

Acompaction and cementation because B. creates a metamorphic rock, C. creates sediments, and D. creates magma.
Again, I hope this helps.=^1

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