What is a disorder?

A disorder is defined as a condition that affects the normal functioning of the body or mind, without necessarily stemming from an injury. This definition encompasses a wide range of health issues, including both physical and mental health conditions, that can disrupt an individual's usual state of health or well-being. For example, a disorder may manifest as a chronic illness, such as diabetes, which alters body function but does not arise from a direct injury.

The correct answer captures the essence of what constitutes a disorder—it's a broader term that includes various conditions that affect health, whether they are physical, psychological, or both. Conditions under this classification can vary widely in symptoms and severity, providing a comprehensive understanding of health challenges in both the physical and mental domains.