Which of the following is considered a serious injury in crash reports?

In the context of crash reports, serious injuries are typically classified based on their potential to result in long-term consequences or require extensive medical treatment. Concussions fit this definition as they involve significant trauma to the brain that can lead to various complications, such as cognitive impairment, prolonged symptoms, or even life-threatening situations. This makes concussions a serious injury, particularly in the context of vehicle accidents where the risk of secondary injuries or complications is heightened.

Other options, while they may involve medical attention, do not generally meet the threshold for being categorized as serious injuries. Minor abrasions are typically superficial and not life-threatening, and although simple fractures can be significant, they are often not categorized as serious injuries unless they involve complications or major bones. Fatalities, while severe and tragic, are classified as a different category altogether, focusing on loss of life rather than injury. Therefore, concussions represent a serious injury due to their potential impact on a person's health and functioning post-incident.