Q:You are presented with the question "What is used to determine the age of extinct organisms?" and the following answer choices: - viruses - an electron microscope - Echinoderm. - fossils of Panthera leo - genetic material - the Sun - tectonic plates coliding - radioactive dating Now knowing that radioactive dating is used to determine the age of fossils and extinct organisms represented only by fossils, choose the best answer.
A:
radioactive dating