What method protects the firefighting team by isolating the fuel source?

The correct answer is master stream operation. This method effectively protects the firefighting team by isolating the fuel source through the use of high-capacity water delivery systems, such as aerial devices or large ground monitors. Master streams are capable of projecting a significant volume of water over considerable distances, allowing firefighters to maintain a safe distance from hazardous areas while still applying effective firefighting tactics.

By utilizing this approach, not only is the fuel source kept cool, but it also provides a barrier between the firefighters and the flames, which can help to prevent flashover and protect against thermal exposure. This isolation minimizes the risk of heat and smoke exposure, thereby enhancing the safety of the firefighting crew as they operate in potentially dangerous environments.

In contrast, other methods like low-pressure cooling might not deliver enough water to adequately control the fire, nozzle control focuses more on the direction and flow of water rather than maintaining distance, and water suppression may not specifically address the need for isolation from fuel. Overall, master stream operation serves a critical role in safeguarding personnel while effectively managing fire suppression efforts.