Geologists frequently look at the relationships among rock layers. Which statement best describes the information geologists get from studying these relationships?

They get a sense of the history of the area they are investigating.

Density of a rock and age of a rock require very specific tests that are irrelevant to the relationships between the rock tested and other layers.

Value of a rock is very subjective to the use that can be made of the rock and also tells nothing about the relationships between layers.

Brainliest?