You should not park your vehicle within

Answer: A — 15 feet of a fire hydrant.

Parking laws vary by location, but generally it is illegal to park within 15 feet of a fire hydrant. This is because parked cars in this area can block access for fire trucks and other emergency vehicles, hindering their ability to respond quickly to a fire or other emergency. Parking within three feet of a driveway can also pose a similar issue, as it can block the entrance or exit for vehicles using the driveway. Parking near a sidewalk or crosswalk may also be prohibited for safety reasons, but the distance requirement is typically less than 15 feet. Overall, it is important to always follow local parking laws and regulations to ensure the safety and convenience of others.