The right option is; c. Radiocarbon dating
Radiocarbon dating can be used to date fossils in rocks to give an approximate age.
Radiocarbon dating is a method that is used to determine the objective age of biological specimens such as ancient human remains by using the properties of radiocarbon. This method depends on the use of carbon isotopes; carbon-14 and carbon-12. To determine the age of an object, the amount of the two isotopes is measured in the object, the ratio of the two values are then compared against an international reference standard.