Which of the following is NOT a common symptom of foodborne illness?

The correct answer is that a headache is not a common symptom associated with foodborne illness. When discussing foodborne illnesses, symptoms typically include gastrointestinal or systemic reactions due to consuming contaminated food, such as nausea, diarrhea, and fever.

Nausea is frequently experienced as the body attempts to reject harmful substances consumed. Diarrhea is another prevalent symptom, as it often results from the body's response to gastroenteritis or the infection caused by pathogens in contaminated food or water. Fever, which indicates the body is fighting off an infection, is also a common symptom of foodborne illnesses.

While a headache can occur in association with some illnesses or as a secondary symptom, it is not a direct or common symptom of foodborne illness itself. Therefore, in this context, it is appropriate to identify headaches as less typical and not characteristic of foodborne illness symptoms.