The Department of Transportation Hazard Class 5 consists of:

• A. Flammable Solids
• B. Oxidizers
• C. Poisons
• D. Flammable Liquids

Answer: (C)

Hazard Class 5 is about oxidizers and organic peroxides. These substances don’t burn themselves in the usual way, but they release oxygen or other oxidizing agents, which can feed and intensify a fire. That makes them especially hazardous around heat, sparks, or other fuels. Organic peroxides are included in this class because they can decompose and release oxygen and heat, further driving combustion or causing dangerous reactions.

So, choosing oxidizers is correct because it matches what Class 5 covers in the DOT system. The other options point to different classes: flammable solids belong to Class 4, flammable liquids to Class 3, and poisons are part of the toxic materials group (Class 6).