Which characteristic pertains to a Type III life jacket?

A Type III life jacket is specifically designed for various activities where mobility is important, such as fishing or paddling. Unlike Type I life jackets, which can float a person in a face-up position, Type III jackets do not guarantee that an unconscious wearer will end up face-up in the water. This is a crucial safety consideration, as users of Type III jackets are often engaged in activities where they may not need the additional buoyancy provided by other types; hence, while they are generally intended for comfort and mobility, they lack the specific design features that ensure face-up floating.

The other choices pertain to different characteristics or types of life jackets. For instance, Type I life jackets are typically better suited for open waters due to their higher buoyancy and ability to keep someone face-up. Similarly, quick release is more characteristic of Type V life jackets, designed for specific uses that require ease of removal. Additionally, infant life jackets are designed specifically for small children and have features tailored to their unique safety needs, making them unsuitable for adults or for use in high-mobility situations.