Which type of PFD is less rigid and offers slightly less support than Type I?

The correct answer is Type II. Type II Personal Flotation Devices (PFDs) are designed for use in calm waters where there is a good chance of recovery. They provide more flotation than Type III PFDs but are less rigid and offer slightly less support than Type I, which is geared towards rougher waters and has a higher buoyancy level.

Type II PFDs are typically used for activities like boating, where immediate rescue is likely, as they are made to turn an unconscious person face up in the water, although not as effectively as Type I PFDs. They are often more comfortable and suitable for a variety of recreational activities where the inherent positioning is not as critical, which makes them an understandable choice for those looking for a balance between buoyancy and comfort.

In contrast, Type III PFDs are even more user-friendly and comfortable but may not turn an unconscious wearer face up as efficiently as Type II. Types IV and V offer specialized uses or are specific to certain situations and do not fit the description provided in the question regarding rigidity and support.