Answer:
The most common directly preserved fossils are unaltered hard parts of a living organism, like shells, teeth, and bones. ... After the remains of an organism have been buried and cemented within sediment, water percolating through the sediment leaches out the fossil. This leaves a cavity in the rock, called a mold.
Explanation:
As much as I have read about this topic, I owuld say the answer is A
I would go with <span>C.ignored the spoils system hope this helps </span>
Happy new year to you too and hopefully 2021 is better year
