Select from:
[+] microscope
[+] an electron microscope
[+] fossilized electrons
[+] fossilized gamma rays
[+] Carbon fibers
[+] carbon 14 dating
[+] chemical equations
[+] Physical weathering
Given those answer options, answer the question: You are presented with the quiz "The age of a fossil can sometimes be determined by what method?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "radioactive dating is used to determine the age of fossils" and "carbon 14 Dating Perhaps the best known radioactive dating is based on ". So, what's the best answer to the question?
A:
carbon 14 dating