According to the text, a direct link between psychological stress and psychopathology is seen not only in post-traumatic stress disorder but also in the disorders.

Mental disorder

Explanation:

According to the text, a direct link between psychological stress and psychopathology is seen not only in post-traumatic stress disorder but also in the mental disorders.

The Stress psychopathology is a psychological theory that attempts to explain behaviour as predisposition vulnerability together with stress from life experiences. and it can take the form of genetic, psychological, biological, or situational factors. A large range of individual differences exist between persons in their vulnerability to the development of disorder. Interventions which deals with treat and prevent mental illness. Pathology refers to illness or disorder.

its so obvious. its 999 obviously.