The correct answer is B) Certificate of Inspection. The Certificate of Inspection (COI) is the key document that specifies the minimum number and qualifications of the crew that a vessel is required to carry. The COI is issued by the U.S. Coast Guard and contains all the operational and safety requirements for the vessel, including the crew composition. By consulting the COI, you can determine the specific crew positions, their required licenses and documents, as well as the minimum number of crew members needed to operate the vessel safely. The other options are incorrect because they do not directly specify the crew requirements. Articles of Agreement are related to employment contracts, the fo'c'sle card is a record of the crew, and the crew list is a general list of the personnel onboard, but none of these documents directly dictate the mandatory crew composition like the Certificate of Inspection does.