Which of the following is a common symptom of foodborne illness?

Stomach cramps and diarrhea are among the most common symptoms of foodborne illness. These symptoms typically arise due to the gastrointestinal tract's reaction to pathogens such as bacteria, viruses, or parasites that contaminate food. When these harmful microorganisms invade the digestive system, they can cause inflammation, leading to discomfort and disruptive symptoms like cramps and diarrhea as the body attempts to rid itself of the toxins or the infectious agents.

While other symptoms like severe headaches, slight fevers, and general fatigue can also be experienced with foodborne illnesses, they are less specific to this type of illness and may present in conjunction with a variety of other health issues. Stomach cramps and diarrhea specifically point towards a disruption in the digestive system that is characteristic of foodborne illnesses, making this choice the most indicative of the symptoms typically experienced.