The best example that explains why a scientist conducting an investigation does not always follow the steps in the scientific method is:
A scientist may make a hypothesis, but when conducting an experiment, may realize he or she needs to back up and do some more research.
This option highlights the iterative nature of scientific research, where scientists often need to modify their approach or gather additional information based on their observations and findings during the investigation. It emphasizes the dynamic process of inquiry rather than a strict linear progression through the steps of the scientific method.