What must the warning statement on explosive labels read?

The correct answer states that the warning statement on explosive labels must read "Warning: Dangerous Explosive." This phrasing is crucial because it clearly communicates the inherent risks associated with the material, ensuring that individuals handling or coming into proximity to explosives are aware of their potential dangers. This specificity helps to foster a safety-first approach when managing these materials, as it establishes the urgency and seriousness of the risk involved.

Safe handling practices are critical in the realm of explosive materials, and having a direct and explicit warning reinforces the need for caution. This type of explicit labeling aligns with occupational safety standards and regulatory requirements that aim to prevent accidents and ensure safe operations.

The other options, while somewhat related to hazardous materials, do not adequately convey the specific risks associated with explosives. Phrases like "High Combustible Material" and "Flammable Substance" do not primarily address the nature of explosives, which may include risks of detonation rather than just combustion. Similarly, "Handle with Care" is too vague and lacks the urgency that "Dangerous Explosive" provides. Effective communication of risks on labels is vital for promoting safety and compliance in handling explosive materials.