Question 3325 Deck General

The correct answer is B) foam. Foam is the preferred agent for fighting a helicopter crash fire on a MODU (Mobile Offshore Drilling Unit) because it is effective at extinguishing hydrocarbon-based fires by creating a blanket that smothers the fire and prevents reignition. Foam works by cooling the fuel, interrupting the chemical reaction, and sealing the surface to exclude oxygen. In contrast, dry chemical, water, and CO2 are less effective for this type of fire scenario.