It is the responsibility of the Master or person in charge of a MODU to ensure that __________.

Correct Answer: Option D — temporary personnel and visitors are advised of emergency stations

46 CFR 109.211 mandates that the person in charge of a MODU must ensure all temporary personnel and visitors are briefed on their emergency stations and duties. This is a vital safety requirement to ensure that non-regular crew members can respond effectively during an emergency situation.