Is gravity a theory or a hypothesis? How do you know?

Gravity is classified as a **theory** because it has overwhelming evidence supporting it. In scientific terms, a theory is a well-substantiated explanation of some aspect of the natural world that is based on a body of evidence and has withstood rigorous testing and scrutiny.

The theory of gravity, particularly as formulated by Isaac Newton and later refined by Albert Einstein with his theory of general relativity, has consistently provided accurate predictions and explanations for a wide range of phenomena, from the motion of celestial bodies to the behavior of objects on Earth.

While scientific theories can be tested and are subject to revision if new evidence emerges, the term "theory" in science does not imply uncertainty or lack of proof. Instead, it indicates a robust framework that explains a significant amount of empirical data.

Therefore, the most accurate choice from the options you provided would be: **Theory, because it has overwhelming evidence supporting it.**