Answer:
Radiometric methods
Step-by-step explanation:
radiometric dating method is the most exact method of determining the age of geologic features. This technique is used in order to find out the age of materials such as rocks or fossils of plants and animals etc. In this method the trace radioactive impurities were selectively incorporated when they were formed. Radioactive elements present everywhere in the universe, these radioactive elements tells us about the age of the rock and fossils present in it.