Answer: C. An idea that is supported by many different experiments.
Step-by-step explanation:
A scientific theory is a well-substantiated explanation of some aspect of the natural world that is based on empirical observations and evidence gathered through the scientific method. It is supported by many different experiments, observations, and data from a variety of sources, and has been extensively tested and validated. Unlike a hypothesis, which is a tentative explanation that is subject to testing and refinement, a scientific theory represents a comprehensive and coherent explanation of a phenomenon that has been repeatedly tested and confirmed over time. It is a cornerstone of scientific understanding and provides a framework for further research and inquiry.