Which of the following is an example of serious physical injury?

The choice of loss of bodily function as an example of serious physical injury is accurate because it signifies a significant impairment in the body's ability to perform essential tasks or activities. This type of injury can drastically affect a person's quality of life and may require extensive medical treatment or rehabilitation. Loss of bodily function often represents a severe underlying condition or trauma, making it a clear definition of serious injury.

In comparison, minor bruises, intense fatigue, and severe headaches do not typically signify a serious physical injury. Minor bruises usually indicate a minor impact and are often self-limiting. Intense fatigue can result from various less severe issues, such as stress or overexertion, rather than indicating a serious injury. Severe headaches, while potentially debilitating, may not always reflect an underlying serious condition; they could stem from tension, dehydration, or other non-critical issues. Thus, loss of bodily function stands out as the most definitive indicator of a serious physical injury.