According to Pollution Prevention Regulations (33CFR), each completed page in the Oil Record Book is to be signed by ________.

Correct Answer: Option D — the master

Under 33 CFR 151.25, the Master of the vessel is legally responsible for ensuring the accuracy and completeness of the Oil Record Book. Consequently, the Master must sign each completed page to certify the entries, ensuring accountability for all oil transfer and discharge operations conducted on board.