Which of the following describes a symptom of gastroenteritis?

The symptoms of gastroenteritis primarily include nausea, vomiting, and diarrhea. Gastroenteritis, often referred to as the "stomach flu," is an inflammation of the stomach and intestines that can be caused by various factors, including viral infections, bacterial infections, or parasites. The body's response to these irritants typically manifests as gastrointestinal distress, leading to the classic symptoms mentioned.

Nausea is the sensation of an urge to vomit, while vomiting is the act of expelling the contents of the stomach. Diarrhea involves frequent, watery bowel movements, which result from the inflammation and irritation in the gastrointestinal tract. These symptoms are direct indicators of gastroenteritis and help in identifying the condition during diagnosis.

Other options, such as coughing and wheezing, indicate respiratory issues, while chest tightness and shortness of breath are associated with cardiovascular or pulmonary conditions. Persistent abdominal swelling can result from various gastrointestinal issues but is not characteristic of gastroenteritis specifically.