According to U.S. regulations, no person may connect or disconnect an oil transfer hose or engage in any other critical oil transfer operation on a tank vessel unless which of the following is met?

Correct Answer: Option C — the designated person-in-charge supervises that procedure

Per 33 CFR 155.700, a designated Person-in-Charge (PIC) must supervise all oil transfer operations. This individual is legally responsible for ensuring that all safety procedures, pollution prevention measures, and communication protocols are strictly followed throughout the entire transfer process to prevent spills and ensure operational safety.