The younger layers of rock in the grand canyon are on top of the older layers. which of steno’s principles best explains this? i didn't have science so i picked chemistry

The next layer is about 30 million years older and contains plant fossils in its mixed shale, limestone, and sandstone rock layers. The third to last layer is full of brachiopods, trilobites, and trilobite tunnels. You believe it is the oldest layer above surface in the Grand Canyon.

Your answer is principles of superposition

the answer is c i took the test