Which of the following is an emotional reaction to stress?

Anxiety is a classic emotional reaction to stress. When individuals experience stress, it's common for them to feel increased levels of anxiety, which can manifest as feelings of nervousness, worry, or restlessness. This emotional response is often tied to the brain's processing of stressful situations, leading to heightened alertness and concern about potential outcomes. Anxiety can affect a person's ability to cope with daily tasks and can vary in intensity based on the level of stress experienced.

In contrast, while the other choices indicate stress effects, they represent physical reactions rather than emotional ones. Difficulty sleeping, nausea, and headaches are physiological manifestations that can arise in response to stress but do not capture the emotional dimension of the experience. Understanding the distinction between emotional and physical reactions to stress is crucial in promoting effective coping strategies and mental health support.