Final answer:
The symptom that is not associated with anxiety out of the given options is A. Lethargy or lack of energy, as anxiety generally causes restlessness and a heightened state of arousal unlike the lethargy observed in depression.
Step-by-step explanation:
Anxiety is a common mental health challenge faced by a significant portion of the U.S. population. Symptoms of anxiety include feelings of worry and fear that are disproportionate and persistent, potentially leading to disruptions in daily life. You asked which of the following is not a symptom of anxiety: A. Lethargy or lack of energy, B. Difficulty focusing on things other than what you are worried about, C. Feelings of danger, dread, or panic, or D. Feeling of nervousness or restlessness. While lethargy or lack of energy can be associated with depression, symptoms of anxiety more specifically include restlessness and trouble focusing on anything other than one's worries. Therefore, increased energy levels or a heightened state of arousal are commonly associated with anxiety, which contrasts with the lethargy often observed in depressive disorders. Symptoms such as difficulty focusing, feelings of danger, and nervousness are indeed characteristics of anxiety disorders.