when the rock that a fossil is in experimented on to find the exact age the fossil was formed. absolute…

Brief Explanations:

Absolute dating determines the exact age of a fossil - containing rock through scientific experiments. Relative dating only gives the order of age compared to other fossils or rocks. Double - dating is not a standard term in this context. Radioactive dating is a type of absolute dating method but the question asks for the general term for finding the exact age.

Answer:

A. Absolute Dating