What are signs of life that a rescuer might observe in a victim?

The signs of life in a victim primarily include observable and tangible indicators that suggest the individual is still living. Body movement or sounds are crucial signs of life that rescuers look for. Movement may indicate that the person is conscious and responsive, while sounds like speech, coughing, or breathing can further confirm their state of being alive. These indicators are direct manifestations of life and show that the individual has some level of consciousness or physiological function.

In contrast, the color of the skin, while it can provide insights into a person's health and may suggest various medical conditions, does not serve as a definitive sign of life. Similarly, facial expressions can sometimes reflect a person's state of consciousness, but they are less reliable than clear actions or sounds. Pupil dilation can indicate responses to light or neurological conditions but is not necessarily an immediate sign of life. Therefore, the option focusing on body movement or sounds is the most direct and recognizable indicator that a rescuer can observe in a victim to assess their condition effectively.