In parallel parking, how far should the wheels be from the curb?

Answer: B — within 18 inches

In parallel parking, it is important to park close to the curb to allow enough room for other vehicles to pass by safely. By positioning your wheels within 18 inches from the curb, you can ensure that your vehicle is securely parked and not protruding into the road or interfering with traffic flow. This distance strikes a balance between being adequately close to the curb and providing enough space for neighboring vehicles.