Explanation

Boiling water, land and sea breezes, and air circulation around a blast furnace all involve the bulk movement of heated fluid, which is convection. The glass surface of an electric bulb, however, is heated mainly by thermal radiation emitted by the hot filament, with the surrounding air playing only a minor role. Radiation, not convection, is therefore the primary mode of heat transfer there. Hence this option is the one where heat loss is primarily not due to convection.