Question: Scientists claim that the area around the Grand Canyon was once covered by an ocean. What evidence would support their claim?

  Options: 
 A. Dinosaur footprints were found near the Grand Canyon.
 B. Fish were found living in the rivers of the Grand Canyon.
 C. Fossils of ocean animals were found at the Grand Canyon.
 D. Bones from desert animals were found at the Grand Canyon.
Answer: C