To determine the number of portable fire extinguishers required on an inspected vessel, you should check the __________.

Correct Answer: Option A — Certificate of Inspection

The Certificate of Inspection (COI) is the primary legal document issued by the USCG that specifies the vessel's safety equipment requirements. This includes the minimum number, type, and location of portable fire extinguishers required to maintain the vessel's certification for its specific route and service.