Riding beside a car is dangerous because?

Riding beside a car is considered dangerous primarily due to the potential hazards associated with this positioning. The correct choice highlights several critical risks such as the likelihood of hitting the car's mirror, being struck by objects that may be thrown from the car, and the motorcycle being in the driver's blind spot.

When riding closely alongside a vehicle, the motorcycle is at risk of making contact with the side mirrors, which can lead to instability or a crash if the car changes lanes unexpectedly. Additionally, passengers in the car might inadvertently drop or throw items that could hit a motorcycle rider. Most importantly, the motorcycle can easily end up in the vehicle's blind spot, where the driver may not see the biker at all, increasing the chances of a collision.

Other options do not adequately capture the significant dangers associated with riding beside cars. For example, while it might be easier to pass in certain scenarios, that does not address the fundamental risks of close proximity to a car. Similarly, the suggestion that the road may be smoother does not relate to the hazards of riding next to vehicles, nor does the claim that cars might notice a motorcycle better, as many drivers still fail to see motorcycles even when they are alongside them. Understanding these risks is vital for safe motorcycling practices.