Final answer:
Option C. The initial step in tackling Bravo fires, such as those from escaping liquids like crude oil, is applying foam or other suitable firefighting agents that deprive the fire of oxygen.
Step-by-step explanation:
The first step in extinguishing Bravo fires involving escaping liquids is applying foam or suitable agents. This type of firefighting foam, often a fluorinated solution, is designed to spread across the burning surface, creating a barrier that starves the fire of oxygen and prevents the release of flammable vapors, effectively extinguishing the flames. Such foams are now utilized globally for dealing with large-scale fires, especially with organic liquids like crude oil that have high energy content and pose additional challenges due to their lower density compared to water.
The first step of extinguishing Bravo fires of escaping liquids is applying foam or suitable agents. Foam is a commonly used method to fight large-scale fires of organic liquids. When applied, the foam forms a protective layer on top of the liquid, separating it from the oxygen in the air and preventing further combustion. This effectively extinguishes the fire.