Question

9/10
what is absolute dating?
being absolutely certain that you want to go out with a person
counting the layers of sediment to determine how old a bone is
calculating an age in years for geologic materials

Explanation:

Absolute dating is a geological/archaeological method that provides a numerical age (in years) for geologic or archaeological materials, unlike relative dating which only orders events (like counting sediment layers). The first option is unrelated to geological dating.

Answer:

calculating an age in years for geologic materials