What is classified as explosive material?

The classification of explosive material is focused on substances that can undergo rapid decomposition or reaction, resulting in a release of gas at high pressure and temperature, leading to an explosion. The correct choice identifies any substance that can act as fuel for an explosion, emphasizing the role of the material in contributing to a potentially violent release of energy.

When considering explosive materials, it is important to note that the fuel is necessary for sustaining a reaction that results in an explosion. This means that while other substances may ignite or burn under certain conditions, they may not have the capability to produce the rapid and destructive effects characteristic of explosives. Thus, the ability of a material to act as a fuel plays a critical role in its classification as explosive material.