According to the organic approach, abnormal behaviour occurs when:

body and brain is not working properly

The correct answer is Option (3) → body and brain is not working properly

A recurring theme in the history of abnormal psychology is the belief that individuals behave strangely because their bodies and their brains are not working properly. This is the biological or organic approach. In the modern era, there is evidence that body and brain processes have been linked to many types of maladaptive behaviour. For certain types of disorders, correcting these defective biological processes results in improved functioning.

Now, check the options:

• Option 1: Conflict between emotion and reason. (psychodynamic view, not organic)

• Option 2: Imbalance in body fluids — (ancient Greek theory, not modern organic approach)

• Option 4: Evil resides in the individual — (ancient supernatural explanation)