<em>Answer: C. Radioactive Dating Of Each Layer </em>
Absolute aging is a aging process in which gives approximate idea about the age of the earth's material. It is helpful in dating age of a rock or fossil. Radioactive dating is a type of absolute aging or dating process. This method configures the organic and inorganic materials present in the material to determine the age of the material. Hence, radioactive dating of each layer can be the most accurate in determining the absolute age of two rocks.