Answer: Sedimentary rocks
Explanation: Relative dating is a method which is used to determine the geological events that has taken place in the past. It does not give the exact age but can depict about the time when the organisms or the object occurred in the geological time scale. It is very useful on the sedimentary type of rocks.
It helps in describing the stratigraphy of a particular area. And this sedimentary rocks can trap fossils in it that are helpful in determining the past events.