How far must your vehicle be from a fire hydrant when parking?

Answer: C — 20 feet

A fire hydrant is an important tool for firefighters to access water in case of an emergency. In order to ensure that the fire hydrant is easily accessible for them, it is important to leave enough space around it when parking. Option A (10 feet) and B (15 feet) may not be considered enough distance, as a parked car may still block the hydrant from view or hinder the fire department's access to it. On the other hand, option D (25 feet) may be too far, as it may take up valuable parking spaces and may not be practical in crowded areas. Option C (20 feet) strikes a balance between accessibility for firefighters and practicality for drivers, making it the correct answer.