A preliminary report in fire investigation typically summarizes which aspects of the incident?

A preliminary report in fire investigation is designed to provide an early overview of the incident, emphasizing critical details that contribute to understanding the fire's origins and circumstances. The choice indicating "what, who, and when" is especially relevant here because it encapsulates the fundamental aspects of the investigation.

" What" pertains to the nature of the incident, including the type of fire and the damage caused. "Who" identifies those involved, such as witnesses, victims, or potential suspects. "When" provides a timeline of events, crucial for establishing a sequence and context for the investigation. Collectively, these elements form a comprehensive snapshot that lays the groundwork for further, more detailed investigation and analysis.

In contrast, the other combinations do not adequately cover the essential elements that a preliminary report should address. They may include relevant aspects but miss out on key information or do not align as succinctly with standard investigative practices.