How does a raging fire compare to a smoldering fire in terms of oxygen consumption?

A raging fire consumes oxygen more quickly compared to a smoldering fire due to the nature of combustion involved. In a raging fire, the combustion process is vigorous and characterized by open flames, which require a significant amount of oxygen to fuel the rapid burning of materials. This high-energy state leads to a rapid depletion of available oxygen in the environment as the flames actively consume it.

Contrastingly, a smoldering fire occurs at lower temperatures and has a slower combustion rate, often producing little to no flame and relying on incomplete combustion. It consumes oxygen gradually, meaning the reduction of oxygen occurs at a slower pace relative to the intense demands of a raging fire. Thus, the active, energetic nature of a raging fire directly correlates with its faster oxygen consumption, making it clear why this option is the most accurate comparison.