Final answer:
PFDs (life jackets) must be in serviceable condition, be the proper size for the intended wearer, and be well-maintained.
Step-by-step explanation:
For example, a PFD that is torn or has a broken buckle would not be considered in serviceable condition and may not provide adequate safety in an emergency situation. Similarly, a PFD that is too big or too small for the wearer may not fit properly and could restrict movement or slip off.
In order to ensure the safety of individuals, it is important to regularly inspect and maintain PFDs, following manufacturer guidelines, and replace them if they become damaged or worn.