A cook checks the temperature of soup being held for service, and it is $130^{\circ}F$...

This scenario describes a key component of aHACCP (Hazard Analysis Critical Control Point)system. In food safety management, a "Critical Limit" is a specific value—such as a temperature—that must be met to prevent, eliminate, or reduce a hazard to an acceptable level. For hot-held soup, the critical limit is $135^{\circ}F$ ($57^{\circ}C$) or higher. When the cook discovers the soup is at $130^{\circ}F$, they have identified a "deviation" from the critical limit.

Taking a corrective actionis the step taken when a critical limit is not met. Reheating the soup to $165^{\circ}F$ for 15 seconds (provided the soup has not been in the danger zone for more than two hours) is the approved corrective action to kill any bacteria that may have started to grow while the temperature was too low. Performing a hazard analysis (Option B) happens during the planning phase of HACCP, and establishing a critical limit (Option C) is the act of setting the $135^{\circ}F$ rule in the first place. Verification (Option D) would involve a manager checking the logs later to ensure the cook actually took the measurement and the action. Corrective actions must be documented in a log to show that the "Active Managerial Control" system is working. If the soup had been below $135^{\circ}F$ for more than four hours, the corrective action would be to discard the food entirely. This process ensures that errors are caught and fixed before they can cause a foodborne illness outbreak.