Final answer:
Lucas appears to be exhibiting signs of psychomotor agitation, which can be a symptom of attention deficit hyperactivity disorder (ADHD), a condition characterized by restlessness and difficulty maintaining attention and controlling impulses.
Step-by-step explanation:
Lucas is displaying symptoms that could be associated with psychomotor agitation. This term describes a series of unintentional and purposeless motions that stem from mental tension and anxiety. Individuals with psychomotor agitation can often appear visibly restless and might pace around, wring their hands, and exhibit other similar behaviors. If we consider various conditions outlined in the provided options, Lucas' symptoms do not appear to align with symptoms such as impaired social skills (c.), balance and posture problems (d.), or insomnia and lack of interest (a.).
However, the description fits with the symptoms of attention deficit hyperactivity disorder (ADHD), a neurodevelopmental disorder characterized by difficulty maintaining attention and controlling impulses. Students with ADHD might show increased levels of restlessness and motor activity, similar to Lucas' behaviors. Lucas appears to be suffering from psychomotor agitation. Psychomotor agitation is characterized by excessive and uncontrollable movements, such as pacing, wringing hands, and pulling at clothing. It is commonly associated with conditions such as anxiety disorders, bipolar disorder, and attention deficit hyperactivity disorder (ADHD).