Which of the following is NOT a sign of a medical emergency?

Normal behavior is the correct choice because it signifies that everything is functioning as expected. In the context of a medical emergency, certain atypical signs draw attention to a potential problem. For instance, unusual noise—such as a person moaning or making strange sounds—can indicate distress or injury. Similarly, an unusual sight, like someone behaving erratically or an apparent injury, is a clear sign that something is wrong and may require immediate attention. An unusual odor, such as a strange smell coming from a person or a hazardous substance, can also be indicative of a medical emergency. Therefore, while unusual signs call for concern, normal behavior suggests that there is no immediate danger or medical issue present.