A newspaper article reported that a fossil was found that was 200,000 years old according to generally accepted radioactive dating procedures. A letter to the editor of the newspaper disputed the accuracy of the age determination because the fossil was found closer to the Earth's surface than were previously discovered fossils of the same age. Which of the following would be an appropriate argument against the letter writer's claim? Older rock layers commonly lie deeper underground than younger ones, Older rock layers may be pushed closer to the surface by geologic processes. The age of a rock layer can often help in determining the age of the fossils it contains. Fossils form only under certain conditions