You suspect a member has a substance abuse problem as when you interact with them they demonstrate:

• A. Overactive interest in socialization
• B. Even tempered mood
• C. Attention to physical care
• D. Increased anxiety an crankiness

Answer: (D)

Mood changes and irritability are common indicators of a substance use problem. When someone is using or going through withdrawal, their brain’s emotion and arousal regulation can become unstable, leading to heightened anxiety, irritability, and crankiness. This makes interactions more reactive and less predictable.

The option describing increased anxiety and crankiness best fits that pattern, because it directly reflects the mood and behavioral instability often seen with substance use or withdrawal. The other behaviors—being overly social, remaining even-tempered, or paying unusually close attention to physical care—do not align as clearly with the typical mood and irritability changes associated with substance issues.

If you notice these signs, approach with concern and support, and follow your organization's procedures for addressing potential substance use concerns.