Which of the following symptoms could occur with narcotic withdrawal?

The symptom of inability to concentrate aligns closely with the manifestations of narcotic withdrawal. When an individual who is dependent on narcotics suddenly reduces or stops their use, they often experience a range of psychological and physical symptoms as their body reacts to the absence of the substance. In particular, cognitive functions such as concentration can be significantly impaired due to withdrawal-related discomfort, anxiety, and craving, which can distract and hinder a person's ability to focus.

Conversely, muscle relaxation is typically associated with narcotic use rather than withdrawal. During withdrawal, individuals may experience muscle tension or discomfort rather than relaxation. Heightened stimulation is also inconsistent with narcotic withdrawal, as it often leads to symptoms like sedation rather than increased alertness. Similarly, enhanced mood usually does not occur during withdrawal; rather, individuals may experience feelings of anxiety, depression, or irritability as their body adjusts to the absence of the narcotic.