Answer:
A.
Explanation:
Based on the information provided within the question it can be said that the best option in this scenario for finding the age of these fossils would be to collect a sample of the volcanic ash layers above and below the fossil layer and date the volcanic deposits with Argon dating methods. Such a method would be Potassium-Argon dating in which the product of the radioactive decay of an isotope of potassium (K) into argon (Ar) are compared in order to calculate an estimated age.
