Judys supervisor asks her to monitor the temperature of the refrigerator. Which probe should she use?

To effectively monitor the temperature of a refrigerator, using an air probe is the most appropriate choice. An air probe is specifically designed to measure the temperature of the air within an environment, such as a refrigerator. This is crucial for ensuring that food is stored at safe temperatures to prevent spoilage and reduce the risk of foodborne illnesses.

An immersion probe, on the other hand, is intended to be used in liquids, making it unsuitable for checking the temperature of air in a refrigerator. Similarly, a penetration probe is designed for measuring the internal temperature of solid foods, while a surface probe measures the temperature of the surface of food or equipment. Therefore, these probes would not provide an accurate assessment of the air temperature inside the refrigerator.

By using an air probe, Judy can ensure that she is accurately monitoring the conditions within the refrigerator, thus helping to maintain food safety standards.