What component describes the means by which a rider is carried on a ride?

The correct choice identifies the component that enables a rider to be transported throughout the ride experience. The term "Ride Unit or Vehicle" refers specifically to the physical structure that carries riders, such as a roller coaster car, a ferris wheel gondola, or any mode of transport designed to facilitate the movement of riders. This component is essential as it not only provides the means for movement but is also designed to accommodate riders securely while ensuring their safety throughout the ride.

The role of a restraint system, while critical for securing riders during the ride, is secondary to the function of the ride unit itself. A safe zone refers to areas designated for rider safety during boarding and disembarking, while the zone of operator awareness relates to areas where an operator needs to maintain visibility and control over the ride. Neither of these options embodies the mechanical aspect of rider transportation like the ride unit does.