Law of Superposition
a basic law of geochronology, stating that in any undisturbed sequence of rocks deposited in layers, the youngest layer is on top and the oldest on bottom, each layer being younger than the one beneath it and older than the one above it.
Answer:
option c. produce their own light.
Theory ----> not proved yet
Law --------> a theory which is proved and universally accepted
I think its A. If you had options like mine