Which fire extinguisher is most prone to freezing when stowed in low temperatures?

Correct Answer: Option B — Foam

Foam extinguishers contain water-based solutions that are susceptible to freezing in low-temperature environments. Unlike CO2, Halon, or dry chemical agents, which are stored under pressure or in dry states, foam requires anti-freeze additives or heated storage to remain operational in sub-freezing conditions, as mandated by 46 CFR safety standards.