On offshore drilling units all sleeping areas, mess areas, recreational and hospital areas that are adjacent to or immediately above a storage area or machinery space, paint locker, washroom, or toilet space must be made __________.

Correct Answer: Option D — odorproof

Offshore drilling unit safety regulations require living quarters, mess decks, and hospitals adjacent to machinery spaces, paint lockers, or washrooms to be constructed odorproof to prevent noxious fumes from entering habitable areas.