Which of the following is a symptom of anxiety?

Choosing the symptom associated with anxiety as a vague, uneasy feeling is correct because anxiety often manifests as a sense of discomfort or apprehension. Individuals experiencing anxiety may describe their state as feeling restless or worried without a specific cause, which aligns closely with the notion of a vague, uneasy feeling.

In contrast, a feeling of calmness, a sense of high energy, and a focused sense of determination typically represent positive or neutral emotional states rather than symptoms of anxiety. Calmness suggests a lack of anxiety, high energy can sometimes suggest excitement or motivation, and determination often relates to goal-directed behavior. Therefore, these feelings do not characterize the experience of anxiety, making the identification of a vague, uneasy feeling as a symptom of anxiety particularly appropriate.