Which of the following is NOT a symptom of excessive stress?

Extreme happiness is the correct choice in this context because it does not align with the symptoms typically associated with excessive stress. When individuals experience high levels of stress, they often exhibit negative emotional states and physical symptoms, such as anxiety, obsessive thoughts, difficulty concentrating, and various physical manifestations like headaches. These symptoms are reflective of the body's response to stress and can significantly affect mental and physical health.

In contrast, extreme happiness generally indicates a state of wellbeing, relaxation, or joy, which is contrary to the feelings associated with excessive stress. Therefore, while the other options represent common experiences during stressful times, extreme happiness does not belong to that category, making it the appropriate answer.