Which one of the following rocks is a metamorphic equivalent of sandstone?
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marble
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quartzite
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Gneiss
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Granite
B
Correct answer
Explanation
Quartzite is the metamorphic rock formed from sandstone. Under intense heat and pressure, the quartz grains in sandstone recrystallize to form quartzite, a much harder and more compact rock. Marble is the metamorphic form of limestone, gneiss can form from various rocks depending on composition, and granite is an igneous rock, not metamorphic.