Which product of combustion most directly reduces a firefighter's visibility inside a structure?

Which product of combustion most directly

Multiple choice — select the best answer

AHeat
BLight
CFire gases alone
DSmoke

✓ Correct answer: D. Smoke Smoke, composed of suspended particles, obscures vision and is the product of combustion most responsible for reduced visibility during interior operations.

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Topic: Basic Fire Science

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Which product of combustion most directly reduces a firefighter's visibility inside a structure?

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