A major criticism of the MAST is that the questions are:

The correct answer highlights a significant concern regarding the MAST (Michigan Alcoholism Screening Test), which is its potential inability to effectively identify denial in respondents. The MAST includes straightforward questions that some individuals might find easy to answer, even if they are in denial about their alcohol use. This simplicity can lead to the conclusion that the test results may not accurately reflect the true substance use issues of the individual, as those in denial might respond in a way that minimizes or obscures their actual behavior. Therefore, the nature of the questions can inadvertently allow some users to circumvent recognizing their problem, making it a less effective tool in some contexts.

The other options present points that may not capture the core issue related to the effectiveness of the MAST. Vague questions might confuse respondents, but the clarity of the MAST questions is generally not a major critique. Similarly, while the MAST can be used by adolescents, it was not specifically designed for that demographic. Finally, while completing the MAST might be challenging for some, the overall construction of the test aims for straightforwardness rather than complexity, so it is not generally viewed as complicated for laypersons to complete.