Which of the following are signs of heat stroke?

The signs of heat stroke are critical to recognize, as this condition is a medical emergency that can lead to serious complications or death if not treated promptly. When considering the characteristics of heat stroke, unusual behavior, an abnormal mental state, and sudden collapse are indicative of the body’s failure to regulate its temperature effectively due to extreme heat exposure.

During heat stroke, the body's temperature regulation system becomes overwhelmed, leading to neurological symptoms because of the excessive heat damaging the brain and other vital organs. Symptoms can include confusion, disorientation, altered mental state, and sudden loss of consciousness. Recognizing these symptoms is essential for timely intervention and could be life-saving, as immediate action must be taken to cool the individual and seek emergency help.

Other options, while they may relate to heat-related illnesses or other medical conditions, do not specifically characterize heat stroke and therefore are not correct indicators of this serious condition.