Incendiary Fire Cause is defined as:

• A. Fire caused by an accidental ignition.
• B. Fire deliberately set under circumstances in which the responsible party knows that the fire should not be ignited.
• C. Fire caused by natural causes.
• D. Fire caused by an electrical fault.

Answer: (B)

Incendiary fire cause means a fire that is started on purpose, with the person knowing that ignition should not occur. This describes deliberate setting to cause a fire, i.e., arson or intentional ignition. It’s distinguished from accidental ignition (unintended), natural causes (like lightning), or an electrical fault (equipment failure). So the statement that best fits is the one describing a deliberate act under circumstances where ignition is known to be improper.