How far must you be from a fire hydrant to legally park?

Answer: B — 15 feet

In Arizona, the law requires that you must park at least 15 feet away from a fire hydrant. This distance is specified to ensure that firefighters have immediate access to the hydrant in case of an emergency. Parking too close can obstruct fire services and endanger lives and property if a fire occurs. Understanding this regulation is crucial for responsible driving and parking, as it not only helps in compliance with the law but also contributes to public safety.