The correct answer is C) Conduct required drills, simulating fire conditions and training with ship's equipment. This is the correct answer because regular emergency drills, including firefighting scenarios, are required by U.S. Coast Guard regulations to ensure crew members are properly trained and prepared to respond effectively to shipboard emergencies. Simply reading a textbook (A), checking training records (B), or watching generic videos (D) does not provide the hands-on experience and practice necessary for effective firefighting using the specific equipment on the vessel. Conducting regular, realistic drills is the best way to ensure the crew is ready to combat a shipboard fire using the ship's own firefighting equipment and procedures.