Normally, before taking drinking water on board in the U.S. or its possessions, the responsible person from the vessel should determine that the source __________.

Correct Answer: Option B — is approved by the Public Health Service

46 CFR requires that potable water sources be approved by the U.S. Public Health Service to ensure the water is free from pathogens and contaminants. Vessels must verify the safety of the source before bunkering to prevent the introduction of waterborne diseases into the ship's potable water system.