Here's a problem to solve: The presence of fossil organisms in rocks can provide information about the environment at the time the sediments were deposited because

Among the 4 following options, which is the correct answer?

- A: fossils occur only in sedimentary rocks.
 
- B: many organisms survive for millions of years.
 
- C: fossils do not undergo chemical or physical weathering.
 
- D: different organisms usually inhabit specific environments.
 