Mental Health

Step 1: Understanding the Acronym DSM:
DSM is a critical reference work in the field of mental health, particularly in psychiatry and clinical psychology.

Step 2: Defining DSM:
DSM stands for the Diagnostic and Statistical Manual of Mental Disorders. It is published by the American Psychiatric Association (APA) and provides a common language and standard criteria for the classification of mental disorders. It is used by clinicians, researchers, psychiatric drug regulation agencies, health insurance companies, pharmaceutical companies, the legal system, and policymakers. The latest version is the DSM-5.

Step 3: Analyzing the Options:
Option (B) provides the correct and complete expansion of the acronym. Option (D) incorrectly uses the word "Design" instead of "Diagnostic". Options (A) and (C) are incorrect expansions.

Step 4: Final Answer:
DSM stands for Diagnostic and Statistical Manual of mental disorders.