What defines a total burn at a fire scene?

A total burn at a fire scene refers to a situation where the fire has consumed all available combustible materials in the area and continues until those materials are fully burned and the fire is finally suppressed. This means that the fire has reached its full potential, effectively utilizing all the available fuels, which leads to a complete combustion process.

This definition highlights the extent to which a fire can develop and indicates that it has reached a state where no further fuel is available to sustain it, making option B the most accurate representation of a total burn. In contrast, other options reference scenarios that do not fit the definition of a total burn: an improperly suppressed fire would indicate that the fire is still ongoing and not fully contained; a small, controlled fire suggests a limited incident that doesn't achieve the extensive combustion characteristic of a total burn; and a fire without smoke production implies a lack of combustion products, which does not align with the concept of a total burn that usually generates significant smoke as materials are consumed.