The correct answer to this open question is the following.
Although you did not include the options, we can say the following.
The set of related concepts is called a theory.
This can be called a theory in that scholars and researchers have developed a set of related concepts that have served to explain these successful predictions, facts, and findings from the compilation of studies.
In scientific terms, a theory is a set of serious explanations about something or a phenomenon, but these explanations are well-substantiated, The explanation is the result of follow-through research that has resulted in the elaboration of hypothesis and facts. Scientists and researchers must test these theories once and twice to confirm the statements or renovate them accordingly.