What are the primary concern(s) for safely transporting and handling Liquefied Gas?

Correct Answer: Option D — All of the above

Safe handling of liquefied gases requires a holistic approach to containment. This includes maintaining system integrity to prevent leaks, ensuring structural protection against physical damage, and designing piping to withstand high pressures. All these factors are essential to mitigate the significant risks associated with transporting cryogenic or pressurized gases.