What effect does riding with a passenger generally have on a motorcycle's handling?

Riding with a passenger on a motorcycle generally increases the difficulty in handling. This is primarily due to the added weight and changes in the center of gravity that come with having another person on the bike. The increased mass affects how the motorcycle responds to inputs from the rider, particularly in terms of acceleration, braking, and cornering.

When a passenger is on board, the motorcycle requires more effort to lean into turns and may need longer stopping distances. This can make it feel less stable and responsive, especially for less experienced riders. It also necessitates adjustments in riding technique, as the rider must be more attentive to balance and control to ensure both the rider's and passenger's safety.

In contrast, the other options suggest improvements in handling or stability, which is not the case when considering the implications of added weight and altered dynamics. Understanding this is crucial for safe riding practices, particularly for those who are not accustomed to riding with a passenger.