I believe the answer is B.
when an animal dies and its body decays, it can leave an imprint in the sediment. If this imprint fills in with minerals from sediment and groundwater, it can harden to form a fossil. This fossil is called a cast fossil. The fossilized imprint is called a mold fossil.
Answer: D.
Explanation:
Because...
Plants convert carbon into oxygen and chemical energy so without carbon they wouldn't have food/energy so they wouldn't be able to live.
* Therefor, the correct answer is D.
* Hopefully this helps:) Mark me the brainliest:)!!