Which type of HAZMAT is characterized by its ability to catch fire easily?

The correct choice is flammable, as this classification specifically refers to materials that have a low flash point, meaning they can ignite easily when exposed to an open flame, spark, or heat source. These substances are particularly hazardous in environments where there are potential ignition sources, as they can lead to fires or explosions if not properly handled and stored.

Flammable materials can include liquids, solids, and gases that ignite easily and burn rapidly. Understanding the properties of these substances is crucial in both aviation and other industries, as it directly impacts safety protocols and emergency response measures. Proper labeling, storage, and training on handling flammable materials are critical to preventing accidents and ensuring the safety of personnel and equipment.

Other categories of HAZMAT, like aerosols, corrosives, and compressed gases, pose different types of hazards, such as pressure buildup, chemical burns, or toxic exposure, but they do not specifically focus on the ignition characteristics like flammable substances do. Thus, the flammable classification stands out for its direct association with fire risk.