What is the most important factor when selecting a life jacket for a passenger?

The most important factor when selecting a life jacket for a passenger is the passenger's body weight and chest size. This ensures that the life jacket can provide adequate buoyancy and support. Life jackets are designed to fit specific weight ranges, and if a jacket is too large or too small, it may not work as intended in an emergency situation. A properly fitting life jacket keeps the wearer secure and reduces the risk of slipping out of the jacket when in the water.

While the type of water activity, color of the life jacket, and fit for adults all have their significance, they do not directly address the vital needs for safety and functionality. For instance, while certain activities may require specialized life jackets, they should still accommodate the individual's physical attributes first and foremost. Likewise, color might enhance visibility, but it does not impact the performance or safety of the jacket itself. Focusing on the correct fit related to body weight and chest size directly correlates to ensuring the passenger's safety in aquatic environments.