A peace officer is required to investigate which of the following crashes?

The selection indicating that a peace officer is required to investigate "None of the above" is not correct in this context. In traffic law, peace officers have a duty to investigate certain types of crashes to ensure safety and uphold legal standards.

When it comes to the categories listed, peace officers are specifically mandated to investigate crashes that result in personal injury. This is crucial for determining the causative factors of the crash, documenting the incident, and potentially filing charges or claims related to injuries sustained.

Crashes that involve only property damage may not always necessitate a full investigation unless there are complications such as hit-and-run situations or disputes that require police assessment. However, incidents of personal injury are always of primary concern as they involve the well-being of individuals and may lead to legal ramifications.

Therefore, the correct answer would recognize that peace officers must investigate instances involving personal injury, reflecting the seriousness of these types of crashes compared to those with property damage or hit-and-run considerations.