Answer:
The correct answer is B. Hard Parts.
Explanation:
Fossils are the remains or spoils of dead animals that have not undergone the rotting process and that, after many years, became part of a crust of the earth.
The fossils can be formed by the same dispossesion of the dead organism, by its impression in the sediment, or by the marks that they leave in life, in this case they are fossil remains.
Fossilization processes are complex with many stages from burial to discovery as fossil. Organisms with hard parts such as a mineralized shell, such as a trilobite or an ammonite, are much more likely to fossilize than animals with only soft parts such as jellyfish or worms.
When the soft parts are removed and the hard ones are exposed, a chemical process begins in which the organic compounds of the same are replaced by other inorganic ones, knows as mineralization. Depending on the composition of the organism and the sediment, there will be different types of mineralization.
