An outbreak of a disease occurs, and a scientist at the Centers for Disease Control (CDC) is in charge of determining the cause. She is studying the microorganism that is thought to be responsible for the disease. Which of the following would be the most helpful to the scientist?

Koch’s postulates provide a method for testing whether a particular microorganism causes a disease. They guide the scientist in checking whether the microorganism is associated with the disease and can reproduce it under controlled conditions. Therefore, Koch’s postulates would be most helpful; germ theory is a broad explanation of disease, while Redi’s experiment and Snow’s map addressed different questions.

AI-written and checked against the verified answer.