What are some signs that may indicate potential drug use?

The indicators of potential drug use, such as erratic behavior, dilated pupils, and an unusual physical appearance, are significant because they reflect changes in a person's behavior and physical characteristics that may result from substance use.

Erratic behavior can manifest as mood swings, agitation, or uncharacteristic actions that are not typical for the individual, signaling possible substance influence. Dilated pupils are a physiological response often associated with the use of stimulants or hallucinogens, while an unusual physical appearance might include discrepancies in grooming, hygiene, or other noticeable changes that are out of the norm for the individual concerned.

These signs are critical for a protective security officer to recognize, as they may inform actions necessary to ensure safety and compliance with laws regarding drug use in a variety of settings. In contrast, the other choices suggest behaviors and appearances that are typically associated with a stable state, which would not indicate potential substance use.