Which statement supports the law of superposition? ОА
Rock layers at the bottom of an undisturbed formation are always the oldest
OB Fossils found in deep rock layers will be younger then those in higher up ones
OC No matter the position of a rock layer, it will have the same relative age as others
OD The amount of carbon found in deep rock layers will be less than that found at the surface,

The right answer is carbon.

All living things are made of carbon skeletons. These molecular carbon skeletons form most of the tissues and proteins that make up living things. So much so that carbon chemistry was called "organic" chemistry because it was a direct result of the observation of living organ compounds. All foods produced by agriculture and  consumed by man (carbohydrates, lipids, proteins) are at the base of the carbon chains.