Step 1: Understanding the Concept:
The General Adaptation Syndrome (GAS) is a model that describes the physiological changes the body goes through when under stress. The question asks to identify the researcher who developed this model.
Step 2: Detailed Explanation:
(A) Hans Selye: An endocrinologist, Hans Selye is known as the "father of stress research." Through his work with rats in the 1930s, he was the first to identify and document the body's predictable, three-stage response to stressors, which he named the General Adaptation Syndrome (GAS). The three stages are Alarm, Resistance, and Exhaustion.
(B) Martin Seligman: Known for his work on learned helplessness and as a founder of positive psychology.
(C) Holmes: Thomas Holmes, along with Richard Rahe, developed the Social Readjustment Rating Scale (SRRS) to measure stress based on life events.
(D) Richard Lazarus: Known for his theory of cognitive appraisal, which states that our emotional response to a stressor depends on how we interpret it (primary and secondary appraisal).
Step 3: Final Answer:
The idea of the General Adaptation Syndrome was propounded by Hans Selye.