Please select the word from the list that best fits the definition states that for undisturbed rocks, the oldest rocks are on the bottom and the rocks become younger and younger toward the top

superposition

Explanation:

Superposition may be defined as  placement of certain things or bodies lying on top of the other or above. This same principle is used to determine whether the one sedimentary rock is older than the other. This principle is known as the principle of superposition.

According to this principle, the oldest sedimentary rocks lie at the bottom and the newly formed rocks are placed at the top of the layers of the undisturbed rock.

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explanation:

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