U.S. regulations state that no person may transfer oil to or from a vessel unless which of the following conditions is met?

Correct Answer: Option B — all parts of the transfer system have been properly lined up

33 CFR 156.120 prohibits oil transfer unless the entire system is properly lined up. This ensures that the flow path is correct, valves are in the proper position, and the system is ready to contain the cargo, preventing accidental spills or over-pressurization of the piping system.