Which principle is used to determine the cause and origin in fire investigation?

• A. Guessing
• B. Withholding Evidence
• C. Burn Pattern Analysis
• D. Random Interviewing

Answer: (C)

Burn pattern analysis is the principle used to determine the cause and origin in fire investigation. Investigators interpret how the fire progressed by examining physical evidence such as burn marks, scorch patterns, charring, melted materials, and the direction of flame travel. These clues help identify the point of origin—the area most severely affected and the likely path the fire took from there. By applying knowledge of heat flow, fuel sources, and ignition possibilities, burn pattern analysis reveals where the fire started and how it spread, which is essential for determining the cause. The other choices don’t provide a systematic, evidence-based method: guessing relies on speculation, withholding evidence is unethical, and random interviewing lacks the scientific basis needed to establish origin and cause.