Which of the following is NOT a symptom that would prevent an employee from working in the restaurant?

The correct choice identifies "Headlights" as not being a symptom that would prevent an employee from working in the restaurant. In the context of food service and health regulations, common symptoms such as nausea, fever, and jaundice are significant indicators of potential illness that could impact food safety and public health.

Nausea could signify a variety of gastrointestinal issues, fever is often a sign of infection, and jaundice can indicate liver problems, all of which could lead to foodborne illnesses if an employee were to continue working while symptomatic. Therefore, employees exhibiting any of these symptoms would typically be advised to stay home to safeguard both their health and that of customers.

Contrarily, "headlights" seems to be a nonsensical term in this context, making it an outlier and the only option that does not represent an ailment or symptom relevant to worker safety in a food handling environment.