What is a key feature of a good theory in scientific research?

A key feature of a good theory in scientific research is that it is falsifiable and supported by data. This means that the theory must be testable through experimentation or observation, allowing for the possibility that it could be proven wrong. This characteristic is essential because it ensures that the theory can be evaluated based on empirical evidence and subjected to rigorous scrutiny. A theory that is not falsifiable cannot be scientifically validated or challenged, rendering it less useful in the scientific community.

Moreover, being supported by data means that the theory is based on systematic observations and experiments, which provide the necessary evidence to support its claims. This reliance on data helps to establish credibility and allows for ongoing refinement and verification of the theory as new evidence emerges.

In contrast, the other options lack critical components of a strong scientific theory. Complex and detailed explanations can sometimes obscure understanding rather than clarify it, while focusing on anecdotal evidence disregards the need for systematic investigation and scientific rigor. Broad and vague interpretations fail to offer clear predictions or insights, making them less effective as theories in advancing knowledge and guiding research.