Which of the following best describes behavioral signs associated with drug use?

Behavioral signs associated with drug use often manifest in ways that reflect changes in a person's mental state or social interactions. The description that emphasizes indicators such as nervousness, paranoia, or evasion accurately encapsulates the types of behaviors one might observe in individuals using drugs. These signs can indicate heightened anxiety or misunderstandings related to reality, which are common in many substance use scenarios.

For example, someone under the influence might become overly suspicious or show withdrawal from social interactions, reflecting paranoia or an evasive nature. These behaviors can help trained professionals identify potential substance use issues and differentiate them from standard behavioral characteristics. Understanding these signs is critical for those working in law enforcement or community support roles, as it allows for appropriate responses or interventions.

The other options do not align with the typical signs seen in individuals who use drugs. Indicators like improved memory and reasoning often contradict the cognitive impairments usually experienced during substance use. Similarly, strong leadership qualities and resistance to peer pressure are traits that may indicate a person's stable mental state, which would typically not correspond with the effects of drug use, making them less relevant in the context of identifying substance use behaviors.