Answer :
Final answer:
Multiple ignition points is the condition that indicates potential arson because it shows a deliberate effort to start a fire, unlike natural or accidental fires which typically begin from a single source.
Explanation:
The condition that should be noted because it may be a potential sign of arson is c) Multiple ignition points. In arson cases, perpetrators often set multiple fires within the same area to ensure the fire spreads quickly and causes maximum damage.
Unlike the other options provided, such as open windows, unlocked doors, and burnt wood, which could be the result of accidental fires or common oversights in security, multiple ignition points indicate a deliberate effort to create a fire. This is because natural or accidental fires typically start from a single source before spreading. Therefore, the presence of multiple ignition points is a significant indicator that a fire investigator would look for when determining the cause of a fire.