Who is known as the father of modern stress research?

Hans Selye

The correct answer is Option (2) → Hans Selye

"Hans Selye, the father of modern stress research, defined stress as “the non specific response of the body to any demand” that is, regardless of the cause of the threat, the individual will respond with the same physiological pattern of reactions. Many researchers do not agree with this definition as they feel that the stress response is not nearly as general and non specific as Selye suggests. Different stressors may produce somewhat different patterns of stress reaction, and different individuals may have different characteristic modes of response. ".