When carrying a cargo of asphalt or molten sulfur, which are carried at temperatures of over 300°F, one of the biggest dangers is __________.

Correct Answer: Option B — water in the tanks or pipelines

Molten sulfur and asphalt are transported at temperatures significantly exceeding the boiling point of water. Any water entering these tanks flashes instantly into steam, expanding rapidly by a factor of approximately 1,600. This causes violent pressure surges, potential tank ruptures, and catastrophic structural damage to the vessel's cargo containment system.