Fossils are commonly found in a. sedimentary rock.
b. igneous rock.
c. granite
d loose sand or granite

A. Sedimentary Rock

Explanation:

Sedimentary rocks, unlike igneous and metamorphic rocks, are formed by the gradual deposition and cementation of the material over time. Such rocks provide ideal conditions for fossils because plant and animal remains can be covered by layers of materials over time, without destroying them.

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Fossils are found in sedimentary rock.

Explanation: This is due to the fact that when sediments( small pieces of rock)  get carried to bodies of water they go through cementation and compaction. When the sediments go through this process they may also have natural matter mixed in with them such as fossils from fish and other animals.

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