North Carolina Firefighter Hazardous Materials Practice Exam

When an explosion can throw off fragments, responders must account for a projection of debris that can injure people at a distance from the blast. This behavior is described by the division dedicated to fragmentation or projection hazards.

So, the division that matches explosion with fragment hazard is the one that specifically covers fragmentation hazards. It’s chosen because it accounts for the shrapnel-like risk that travels beyond the immediate blast area, unlike divisions that describe primarily a mass explosion, a fire-focused hazard, or minimal/insensitive hazards.