Which of the following statements best describes a theory?

A theory is best described as a well-supported explanation for a broad range of phenomena. This characterization reflects the scientific method, where theories are developed after extensive research, experimentation, and validation. Theories integrate a significant amount of evidence and provide coherent explanations that help us understand complex biological processes or natural events. They are not merely simple observations, which would lack the depth and breadth required to cover a wide array of situations.

Additionally, a theory is built on empirical data rather than personal opinions, which tend to be subjective and lack the rigorous testing that scientific theories undergo. While theories can evolve over time as new evidence emerges, they are not subject to immediate change; they are robust frameworks built on extensive research. This comprehensive perspective ensures that theories remain foundational to scientific understanding, guiding further study and exploration in the field.