Answer:
Footsteps
Explanation:
A fossil is a trace of a plant or an animal preserved in earth or rock. An example of a fossil is a preserved tooth or nest.
A footstep from a former animal can be preserved in the earth and give us clues about that life form. An arrowhead was made by a person. Therefore, it can't be a fossil. It is an artifact.
Remember, fossils are the remains of living things. Artifacts are the remains of objects that were created. Therefore, the best choice is footsteps.
