Answer:
A. Rapid Burial C. Hard body parts
Step-by-step explanation:
Fossils are the remains of an organism. Fossil preservation is a process by which the remains of an organism are transformed into rocks impressions on sedimentary rocks.
Rapid burial: an animal body or plant which was buried in mud, silt or other substances shortly after death later the death body of an organism or plant become fossil. For instance the fossilized dinosaur covered by sand,or foliage after its death. Hence, rapid burial comprises preserved fossils and protected from destruction.
Hard body parts: once the living beings had been buried it must be preserved. Hard body parts such as bones, skeleton, shells and teeth have become fossils. The rapid burial and presence of mineral preserves the hard body parts.