Final answer:
General adaptation syndrome, developed by Hans Selye, describes the body's physiological reactions to stress in three stages: alarm reaction, stage of resistance, and stage of exhaustion.
Step-by-step explanation:
General adaptation syndrome, developed by Hans Selye, is a three-stage model of the body's physiological reactions to stress. The three stages are: alarm reaction, stage of resistance, and stage of exhaustion. The alarm reaction is the body's immediate reaction to a threatening situation, the stage of resistance is when the body continues to adapt and cope with the stressor, and the stage of exhaustion is when the body's physical resources are depleted. This model explains how stress can lead to physical damage and disease.