Question: To change a flat tire on your vehicle.
Option 0: If you have no tire jack, just unscrew the lugnuts,and then pull on the tire until it comes free of the car,
Option 1: jack up the car with a tire jack. Unscrew all four lugnuts and remove the tire. Replace the flat tire with the spare tire, found in the trunk. Replace all four lugnuts and lower the car with the tire jack.
Answer: 1