Which of the following describes what happened but does not provide an explanation for the occurrence?

A law in scientific terms is a statement that describes a consistent and universal relationship observed in nature. It tells us what happens under certain conditions without delving into the underlying reasons or mechanisms behind those occurrences. For instance, Newton's Law of Universal Gravitation describes the relationship between masses and the force of attraction between them, but it does not explain why gravity exists or how it operates at a fundamental level.

In contrast, a theory aims to provide a coherent explanation of phenomena, a hypothesis offers a testable prediction, and a conclusion generally summarizes the results after conducting an experiment, often providing an insight or understanding of the observations made. Thus, while a law states what occurs, it does so without providing the rationale, making it the correct choice for this question.