How does a sand bucket help control a fire in a laboratory?

ASand is thrown to smother the person, not the fire, which would not stop the flames from spreading

BSand cools the fire by absorbing its heat directly, the same way water lowers a fire's temperature

CSand is spread over the fire, depriving it of oxygen and dousing it

DSand reacts chemically with the flames to neutralise them, similar to a fire extinguisher's foam

Explanation

Sand deprives the fire of oxygen, dousing it.

Derived from ZIMSEC Biology 4025/2 Paper 2 Theory, June 2019, Q1

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