What defines a personal watercraft (PWC)?

A personal watercraft (PWC) is specifically defined as a small vessel that is powered by an inboard engine and uses a jet drive for propulsion. This design allows for high maneuverability and speed, which is characteristic of PWCs. They are typically designed for one or two riders and provide a thrilling experience on the water, distinguishing them from other vessel types.

In contrast, vessels designed for sailing involve sails for propulsion and are not classified as PWCs. Fishing boats vary in size and design, and while some may be small, they do not typically use jet drives. Recreational cruising vessels are usually larger and designed for comfort and longer excursions rather than the quick, agile performance associated with PWCs. The defining element of a PWC is its small size and inboard jet drive, making option B the correct choice.