Answer:
Theory
Step-by-step explanation:
Theory is the set of fundamental principles of an art or a science, which provides a synthesized opinion, is a general notion, which can be refuted and reformulated.
A theory is the speculative part of a science, as opposed to practice. It is a system consisting of observations, ideas and axioms or postulates, constituting in its entirety a set that tries to explain certain phenomena. The explanation formed by a theory can be questioned in the future with the advancement of technology and the discovery of new concepts.