Which of the following is a potential withdrawal symptom of narcotics?

Withdrawal symptoms from narcotics often include a range of physical and psychological responses due to the body's adaptation to the presence of the substance. Anxiety is a well-documented symptom of narcotics withdrawal. When an individual who has been using narcotics regularly stops, their body can react with increased tension and unease as it readjusts to functioning without the drug. This is compounded by the fact that narcotics generally produce feelings of relaxation and euphoria while being used; therefore, their absence can lead to feelings of anxiety and distress.

In contrast, the other options do not align with typical withdrawal symptoms from narcotics. Increased appetite is generally not associated with narcotic withdrawal; rather, individuals may experience a decrease in appetite. Increased energy is also unlikely, as withdrawal often leads to fatigue and lethargy, not heightened activity levels. Similarly, excessive calmness would contradict the typical withdrawal experience, which is often characterized by agitation and restlessness rather than tranquility.