Which type of cargo tank is well insulated and used for carrying liquefied gases such as liquid oxygen?

The correct answer is focused on the cryogenic liquid cargo tank, which is specifically designed for the transport of liquefied gases at very low temperatures. These tanks are well insulated to maintain the extremely low temperatures required to keep gases like liquid oxygen in their liquid state.

The insulation is crucial because it minimizes heat transfer, preventing the liquefied gases from boiling off into gas due to heat infiltration. Cryogenic tanks are made from materials that can withstand both the low temperatures and the pressure associated with transporting gases in their liquefied form, ensuring safety and efficiency in transportation.

In contrast, high pressure cargo tanks are better suited for transporting gases at elevated pressures but are not designed for the low temperatures required by liquefied gases. Low-pressure containers are not built to handle the cryogenic temperatures essential for substances like liquid oxygen. Compressed gas tube trailers also serve a different purpose, as they transport gases at high pressures and are not insulated for cryogenic use.