Which term refers to someone who does not respond at all to stimuli?

The term that describes someone who does not respond at all to stimuli is "unresponsive." This definition is important in emergency care as it helps responders assess a person's level of consciousness and urgency of care. An unresponsive individual does not react to verbal commands, physical touch, or any other forms of stimulus, indicating a potentially serious medical condition that may require immediate intervention.

In contrast, the other terms indicate varying levels of awareness or responsiveness. A responsive individual reacts to stimuli, demonstrating some level of consciousness. Being conscious means the person is aware of their surroundings and can respond, while being awake refers specifically to the state of not being asleep. Since an unresponsive person shows no signs of reaction or awareness, identifying this condition is crucial for prioritizing appropriate first aid interventions.