The spreading of fire as a result of heat being carried through a vessel's ventilation system is an example of heat transfer by __________.

Correct Answer: Option B — convection

Convection is the transfer of heat through the movement of fluids or gases. In a shipboard fire, heated air and combustion products travel through ventilation ducts, carrying thermal energy to remote compartments and igniting secondary fires, which is why ventilation dampers must be closed during emergency firefighting operations.