<em>The correct option is d) classifying psychological disorders</em>
Explanation:
The Diagnostic and Statistical Manual of Mental Disorders (DSM) can be described as the diagnostic system which shares a paradigm by which practitioners observe the mental health patients. It contains descriptions as well as symptoms for diagnosing any kind of mental health sickness. The DSM classifies all types of mental health related disorders along with their necessary description like treatment plans and symptoms.
