When parking parallel, it is best to leave the curb side wheels:

Answer: B — 6-18 inches from the curb

When parallel parking, it is best to leave the curb side wheels 6-18 inches from the curb. This allows for enough room for other cars to pass by and prevents your car from being too close to the curb, which can cause damage to the tires or rims. Option A is incorrect because 3-6 inches may not provide enough clearance for passing cars and can also make it difficult for the driver to turn the steering wheel. Option C and D are incorrect because leaving more than 18 inches could take up valuable parking space and may also make it harder for the driver to maneuver their car out of the spot.