GCEGeographyRocks and Landforms2023

Limestone is classified as a sedimentary rock primarily because it

Ais formed from the cooling of lava at the Earth's surface
Bhas been altered by intense heat and pressure within the Earth
Cis formed from the accumulation and compaction of organic remains such as shellsCORRECT
Dcontains large interlocking crystals of quartz and feldspar
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Why the answer is C, and why the others tempt you.
Limestone is an organic sedimentary rock formed mainly from the compaction and cementation of calcium carbonate derived from the shells and skeletons of marine organisms. It is neither formed by cooling magma nor by metamorphic processes. The presence of fossils is a common characteristic of limestone.
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