Which of the following is true regarding Yamaha’s electric bikes?

Yamaha's electric bikes are designed with an emphasis on sustainability, which includes the potential to significantly reduce urban air pollution. As electric vehicles, they produce zero emissions at the point of use, making them a cleaner alternative to traditional gasoline-powered vehicles. This feature becomes particularly important in urban areas where air quality can suffer due to high levels of vehicular emissions. By adopting electric bikes, riders can help to improve air quality and promote a healthier environment, thus supporting efforts to reduce urban air pollution.

The other options highlight concepts that do not align with the characteristics of Yamaha's electric bikes. Regular refueling is not necessary since electric bikes are charged rather than refueled in the conventional sense. Additionally, while Yamaha does participate in racing, their electric bikes are not primarily designed for that purpose, as they cater to a broad market focusing on urban commuting and leisure. Lastly, suggesting that electric bikes are only suitable for long-distance travel overlooks their versatility and practicality in urban settings where shorter trips are more common.