What components are found in a personal flotation device (PFD)?

• A. Lightweight materials and a built-in whistle
• B. Buoyant materials, straps for securing, and reflective markers
• C. Airbags and buoyancy sensors
• D. Thermal liners and emergency flares

Answer: (B)

A personal flotation device (PFD) is designed primarily for keeping individuals afloat in water, which is why buoyant materials are a key component. These materials provide the necessary buoyancy to support a person's weight, helping to prevent drowning. Additionally, straps for securing the PFD are essential for ensuring that the device remains fastened to the individual, even in turbulent water conditions or during movement. Reflective markers are also important as they enhance visibility in water, making it easier for rescue personnel to locate individuals in distress.

While the other options mention various features or materials that may seem relevant, they do not accurately represent the fundamental components required for a PFD. For instance, airbags and buoyancy sensors, while useful in certain contexts, are not standard features in personal flotation devices. Similarly, thermal liners and emergency flares focus on different safety aspects rather than the flotation and security functions a PFD provides. Overall, the correct answer encompasses the essential attributes needed for effectiveness as a flotation device.