C. Benjamin Franklin's practical inventions designed to make life safer and easier please mark me as the brainlyest answer if I'm correct
Louis xvi began to make plans to use force against the third estate.
Answer:
D. The rock was once in a marine environment.
Explanation:
The question says when MARINE organisms are present in a rock, meaning it was in a marine environment. Most fossils are found on land, but scientists can easily figure out of it was originally from land or marine based.