According to Coast Guard Regulations (CFR 33), all ships are required to prepare, submit, and maintain a (an) __________.

Correct Answer: Option A — shipboard oil pollution emergency plan

33 CFR Part 151 requires vessels to maintain a Shipboard Oil Pollution Emergency Plan (SOPEP). This document provides essential guidance for the master and crew to respond to oil discharge incidents, outlining procedures for reporting, containment, and cleanup to minimize environmental impact in accordance with international MARPOL requirements.