Which phrase describes the relative age of a rock? uses the law of superposition to determine which rock is older or younger
can determine the age based on location of a rock within the same layer
requires only one rock to determine the age
can provide the exact age of a rock

The law of superposition of rocks is used to determine the age of rocks.

A rock is defined as a solid mass of minerals which could be found above or below the earth's surface. Rocks are of different types and they take different forms.

In order to determine the relative age of  rocks, the law of superposition is used. This law can be used to determine  which rock is older or younger.

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A. Uses the law of superposition to determine which rock is older or younger.

Explanation:

I majored in Biology

yes, because even though a theory has a  lot of evidence to support it, it is not always true