How does the Diathesis stress model explain the development of psychological disorders?

A. Diathesis may make a person 'predisposed' or 'vulnerable' or at risk to develop a disorder.
B. Psychological disorders develop when a diathesis is set off by a stressful situation.
C. Presence of diathesis or some biological aberration may be inherited or developed.
D. Presence of pathogenic stressors and individual's exposure to them may actually evolve into a disorder.

Choose the correct answer from the options given below:

BCAD

The correct answer is Option (2) → BCAD

B. Psychological disorders develop when a diathesis is set off by a stressful situation.

C. Presence of diathesis or some biological aberration may be inherited or developed.

A. Diathesis may make a person 'predisposed' or 'vulnerable' or at risk to develop a disorder.

D. Presence of pathogenic stressors and individual's exposure to them may actually evolve into a disorder.

Diathesis-stress model: This model states that psychological disorders develop when a diathesis (biological predisposition to the disorder) is set off by a stressful situation (B). This model has three components. The first is the diathesis or the presence of some biological aberration which may be inherited (C). The second component is that the diathesis may carry a vulnerability to develop a psychological disorder (A). This means that the person is ‘at risk’ or ‘predisposed’ to develop the disorder. The third component is the presence of pathogenic stressors, i.e. factors/ stressors that may lead to psychopathology (D). If such “at risk” persons are exposed to these stressors, their predisposition may actually evolve into a disorder. This model has been applied to several disorders including anxiety, depression, and schizophrenia.

Note: there appears to an ambiguity in the question and is not precisely framed. However, the given answer is as per NTA answer sheet.