Which scenario would trigger a state fire marshal investigation according to the given guidelines?

• A. Suspected arson in vehicle fires
• B. Suspected arson fires
• C. Explosions
• D. Fires caused by lightning

Answer: (B)

The main idea being tested is that arson investigations are triggered whenever there is suspicion that a fire was deliberately set. The state fire marshal’s role is to determine if ignition was intentional and to gather evidence for possible prosecution, regardless of where the fire occurred. Therefore, a scenario described as suspected arson fires best signals the need for a state fire marshal investigation, because it explicitly centers on deliberate ignition. The other options describe specific causes or events (like natural lightning or explosions) and only imply investigation if arson is suspected; they don’t directly state that arson is suspected across fires in general, which is why they aren’t the strongest fit.