Rapidly oxidizes, can result in combustion.

• A. Corrosive
• B. Flammable
• C. Irritant
• D. Oxidizer

Answer: (D)

This question is about substances that push a fire to burn by supplying oxygen. An oxidizer is a chemical that accepts electrons and, in the process, releases oxygen or makes oxygen available to fuel. This enables rapid oxidation and can trigger combustion in materials that might not ignite easily on their own. That driving role in promoting burning is what makes the term the best fit here. Corrosive describes damage to materials or tissues, not the burning behavior. An irritant causes irritation. Flammable describes something that can burn itself in air, but the statement focuses on providing the oxygen for combustion rather than burning itself, which is why it isn’t the best match.