Which of the following choices does not depict the tank inerting process on a tank vessel?

Correct Answer: Option D — the introduction of oxygen into a gas free tank prior to entry

Inerting is the process of reducing oxygen to prevent combustion. Introducing oxygen into a gas-free tank is the opposite of inerting; it is a ventilation or purging process intended to make the space safe for human entry, not to maintain an inert, non-flammable atmosphere for cargo safety.