The MAST screening test is used to explore the degree and severity of a client's problem with which type of abuse?

The MAST (Michigan Alcoholism Screening Test) is specifically designed to identify problems related to alcohol use and assess the severity of alcohol abuse. This screening tool consists of a series of questions that help clinicians evaluate the impact of alcohol on an individual's life and functioning. It has been widely recognized and utilized in the field of addiction counseling to diagnose and screen for alcoholism.

While the other substances listed may be significant in their own rights, the MAST is tailored for alcohol-related issues, making it the appropriate choice in this context. Understanding the focus of the MAST is crucial for counselors as they develop appropriate intervention strategies for clients struggling with alcohol use.