Which of the following is a common sign of anxiety?

Restlessness and tension are common signs of anxiety because they reflect the body's physiological response to stress. When a person experiences anxiety, their body may enter a heightened state of alertness, which can manifest as an inability to relax, feeling on edge, or experiencing muscle tension. This state of nervous energy often leads to physical restlessness, such as fidgeting or difficulty sitting still, as the individual struggles to cope with their heightened emotional state.

In contrast, the other options typically do not align with the experience of anxiety. Increased focus on tasks might occur in some scenarios, but it is not a general indicator of anxiety. Improved communication skills and enhanced teamwork are often associated with feelings of confidence and comfort, which are generally not present when someone is dealing with anxiety.