What is the purpose of a PFD?

The primary purpose of a Personal Flotation Device (PFD) is to keep wearers afloat. PFDs are designed to provide buoyancy, allowing individuals to stay on the surface of the water in case of accidental immersion or capsizing. This is crucial for safety while boating, swimming, or participating in any water-related activities, as they significantly reduce the risk of drowning by ensuring that individuals can remain buoyant.

While other options might touch on different aspects of boating safety or comfort, they do not directly pertain to the main function of a PFD. For instance, padding may enhance comfort but is not the core purpose of a PFD. Similarly, navigation aids are typically tools or devices used for determining one's position or course in the water, and protecting against sun exposure does not relate to flotation or safety in water.