Among the following, which symptom may exhibit signs of respiratory distress?

Cyanosis is a symptom that indicates a lack of oxygen in the bloodstream, often resulting from various forms of respiratory distress. When a person is experiencing difficulty breathing or is unable to get sufficient oxygen, the skin may take on a bluish hue, particularly noticeable in areas such as the lips, face, and fingertips. This visible sign is crucial for an Emergency Medical Dispatcher to recognize, as it points to a potentially life-threatening condition that requires immediate medical attention.

The other options, such as increased appetite and increased energy, are generally associated with well-being and adequate oxygenation, making them less relevant to recognizing respiratory distress. Additionally, a normal breathing pattern is indicative of proper respiratory function and does not signify distress. Therefore, identifying cyanosis allows emergency responders to prioritize care for individuals who are suffering from impaired respiratory function.