In which scenario should a defensive firefighting strategy be applied?

A defensive firefighting strategy is employed primarily in situations where entering a structure is too dangerous for firefighters due to conditions such as extreme heat, hazardous materials, or imminent building collapse. In this context, the primary focus shifts to protecting surrounding structures and minimizing fire spread to areas that could be impacted. This is particularly relevant when there are significant risks to the safety of firefighters, and their efforts must be directed towards safeguarding exposures rather than attempting to save a structure that may be beyond rescue.

In a scenario where there is a specific life at risk inside, the strategy would typically lean towards an offensive approach, where efforts are made to gain entry and perform rescues. Similarly, when conditions indicate minimal fire spread, the emphasis might allow for a more aggressive attack rather than retreating to a defensive posture. Finally, the presence of extinguished ignition sources does not inherently warrant a defensive strategy since the situation would likely be under control, allowing for more proactive measures instead. Thus, option C reflects the appropriate context for a defensive strategy, prioritizing safety and the protection of exposures in a hazardous environment.