You are presented with the question "What being found in a place shows that place used to be covered by water?" and the following answer choices: 
- volcanoes
 - wind
 - plankton and nonliving organic
 - dead organisms
 - marshes and swamps
 - sedimentary rocks
 - dirt
 - remains of prehistoric life

Now knowing that if fossils of a water animal or plant are found in a place then that place used to be covered by water in the past and fossils are the remains of prehistoric life, choose the best answer.


 

        remains of prehistoric life 