What is the meaning of a circular blue sign with a white outline and a bicycle symbol?

Answer: C — Bicycle path

The circular blue sign with a white outline and a bicycle symbol indicates a designated bicycle path. This sign is used to inform cyclists that they are entering an area where it is advisable or required to ride their bikes, and it typically marks a route that is specifically for bicycle use. This helps to enhance safety for cyclists by providing them with a dedicated lane separated from vehicular traffic. In contrast, other options represent different meanings. For example, a sign indicating "End of bicycle lane" would suggest that the designated bicycle lane is finishing, which is different from promoting a bicycle path. Similarly, a "No cycling" sign would explicitly prohibit cycling in that area, while "Parking for bicycles only" would designate a space where bicycles may be parked, rather than indicating a path for riding.