Which of the following best defines stress?

The definition that encompasses stress as a concept includes the various factors that contribute to its experience, which can be physical, chemical, or emotional in nature. Stress is characterized as a response by the body to demands or pressures that exceed a person's coping resources. These demands can arise from various sources—psychological stressors like anxiety or pressure; physical stressors such as injury; or chemical stressors that affect bodily functions.

Recognizing stress as a multifaceted concept is essential for understanding its impact on health and well-being. Both mental and physical health can be affected, explained by factors such as hormonal changes and psychological responses. As these components illustrate, stress is not limited to just one dimension, but rather a combination of influences that can lead to both mental and physical tension. This comprehensive understanding highlights why the selected definition is accurate in describing what stress entails.