The principle, which states that in an undisturbed rock layers, the oldest rock layers are on the bottom and the youngest rocks are on top, is the principle of superposition. Hence, option B is correct.
What is the principle of superposition?
The principle of superposition is used for implying that when the layers of rocks are superimposed, they lay down on top of one another. It is used by scientists to know about the relative ages of the rock layers.
One of the basic characteristics, which is explained by the principle of superposition, is that the oldest rock strata will be on the bottom and the younger one will always be on top of the older one in rock layers.
Hence, option B states about the principle of superposition.
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