What type of evidence is demonstrated by computer modeling of a fire's development?

• A. Factual evidence.
• B. Demonstrative evidence.
• C. Circumstantial evidence.
• D. Implied evidence.

Answer: (B)

Demonstrative evidence is used to illustrate a concept or scenario so others can visualize what happened. A computer model of a fire’s development provides a visual, dynamic representation of how the fire could have spread under certain conditions (fuel, ventilation, heat release, etc.). It helps investigators and responders understand and communicate the sequence of events and supports the conclusions being drawn, even though the model itself isn’t direct, on-scene observation. It’s not direct factual data from the scene, nor is it simply inferred or implied; it’s a tool to demonstrate a plausible progression.