Who should always be suspected of having a head, neck, or spinal injury?

The correct choice is a person who has been electrocuted, as they should always be suspected of having a head, neck, or spinal injury. Electrical injuries can cause significant trauma to the body, including the central nervous system, which encompasses the brain and spinal cord. When a person is electrocuted, there are risks of having sustained a fall, which could lead to head and neck injuries, or even direct damage to spinal structures due to the force of the electric current.

Individuals who fall from a height or those in minor car accidents may also sustain head, neck, or spinal injuries; however, it is not as universally applicable as with electrical injuries. Furthermore, a muscle strain does not inherently suggest potential damage to the head, neck, or spine, making it less likely that such injuries are present in that scenario. Thus, electrocution stands out as a situation where the risk of serious injury to these areas is paramount, warranting close examination and appropriate emergency response.