Final answer:
The appropriate life jacket for each passenger should be chosen based on their size to ensure a proper fit and optimal safety.
Step-by-step explanation:
The appropriate life jacket for each passenger on board should be chosen based on their size, as this ensures a proper fit and optimal safety. Life jackets come in various sizes, such as child, youth, and adult, to accommodate different body types.
Color, brand, and age are not determining factors in selecting an appropriate life jacket. The color of a life jacket is a personal preference, and it does not affect its functionality. Brand and age do not determine whether a life jacket is suitable for a passenger.
In summary, the life jacket chosen should be based on the individual's size to ensure a proper fit and adequate safety.