Answer the following question given this paragraph: 

In this lesson, you read how scientists determine the relative ages of sedimentary rock layers. The law of superposition determines which rock layers are younger or older than others.


Q: Name the law that determines as to which rock layers are younger or older than others.

 Choices:

- law of gravity

- geologic theory

- law of apposition

- law of superposition

A:
law of superposition
