The correct answer is D. The explanation is as follows: 1) The correct answer is D - The master shall determine that the vessel complies with all applicable stability requirements in the vessel's trim and stability book, stability letter, Certificate of Inspection, and Load Line Certificate, as the case may be, and then enter an attestation statement of the verification in the log book. The vessel may not depart until it is in compliance with these requirements. 2) This is the correct answer because the regulations require the master to verify the vessel's stability before departure and document this verification in the log book. The master cannot allow the vessel to depart unless it is in compliance with all applicable stability requirements. 3) The other options are incorrect because they either do not require the master to personally verify the stability, or do not specify that the verification must be documented in the log book. 4) In summary, the master is responsible for ensuring the vessel's stability before departure, and must document this verification in the log book before the vessel can depart.