Select the correct answer. Imagine that you are buying books one by one and then piling them up after reading them. Which geologic concept could you use to identify the topmost book as the newest? A. principle of inclusion B. principle of lateral continuity C. law of superposition D. principle of unconformities

The law of superposition is like stacking your books! In geology, this principle states that in undeformed sedimentary rock layers, the oldest layers are at the bottom, and the younger layers are at the top. So, just like your pile of read books, the newest one is always on top! The law of superposition helps geologists determine the relative ages of rock layers in a sequence. Imagine stratum upon stratum, like your binge-reading sessions! If a geologist finds a fossil in the top layer, they know that the organism lived more recently than those in lower layers, just as your latest book is the freshest read in your collection!