Which of the following best describes the self-sustained chemical reaction in the flaming combustion process?
A. Fuel molecules and oxygen break apart to form methane and other simple flammable gases that break down to form additional fuel for the fire
B. Fuel molecules and oxygen break apart to form free radicals, then combine with available fuel and oxygen to form intermediate combustion products
C. Oxygen and other available fuel components combine to form free radicals that excite the remaining fuel, which break down to create additional fuel.
D. Heat from the fire breaks all available fuels down to their most basic form commonly called free radicals that are burned and further heat and break down available fuel
Answer: B. Fuel molecules and oxygen break apart to form free radicals, then combine with available fuel and oxygen to form intermediate combustion products
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Indicate whether the statement is true or false