Relative dating techniques can only be used to detemine the relative age of an object, not to measure the absolute age of an object.
In order to measure the absolute age of new fossils, scientists typically employ a method called radiometric dating (or radiometric dating, same method with a different name). This method uses radioactive isotopes.
The correct answer is:
<span>c. Scientists use radioactive isotopes to determine the absolute age of a new fossil.</span>
