Which of the following can indicate fire cause?

• A. Debris
• B. Smoke color
• C. Footprints
• D. Flames direction

Answer: (A)

The main idea here is how investigators identify what started a fire by looking for physical clues at the scene. Debris found at or near the origin often holds the most direct evidence of the cause, such as containers or materials that point to an accelerant or ignition source. For example, remnants of fuels, unusual objects, or damaged components can reveal whether an intentional act or an accidental ignition sparked the fire.

Smoke color can provide useful information about how the fire burned and what was involved, but it doesn’t reliably indicate the exact cause. Footprints don’t help determine what started the fire, and flames direction mainly helps establish where the fire originated and how it spread, not why it started. So debris stands out as the most informative indicator of the fire’s cause.