What is a personal flotation device (PFD)?

A personal flotation device (PFD) is specifically designed to keep a person afloat in water, making it an essential safety equipment for boating and other water activities. The primary function of a PFD is to provide buoyancy, thereby preventing drowning and aiding individuals in staying above water until help arrives or they can swim to safety. PFDs come in various styles, including life jackets, vests, and buoyancy aids, and they are crucial for ensuring the safety of individuals who are vulnerable in aquatic environments.

Other options do not align with the primary purpose of a PFD. A boat anchor is used to secure a vessel in place, an emergency signaling device is meant to call for help, and a specialized fishing net is used for catching fish. All of these items serve different functions unrelated to providing buoyancy or keeping a person afloat, underscoring why option B is the correct and relevant choice in this context.