On Subchapter T small passenger vessels, after loading and prior to departure, the master shall determine the vessel complies with all stability requirements in which of these documents?

Correct Answer: Option D — All of the above

46 CFR 185.310 requires the Master to ensure the vessel complies with all stability requirements specified in the stability letter, Certificate of Inspection, and Load Line Certificate. These documents collectively define the operational limits and safety parameters necessary to maintain the vessel's stability during all loading conditions.