Final answer:
To back out of an angle parking spot, you should turn your wheels after you start moving backward, typically when your rear bumper is even with the vehicles next to you. Option c is the correct answer.
Step-by-step explanation:
When backing out of an angle parking spot, the appropriate time to turn your wheels is not immediately as you start to back up. The key is to ensure that you have enough room to clear the vehicles adjacent to you, so as not to cause an accident or scrape another car.
Therefore, the correct procedure would be to start turning your wheels after you have begun moving backwards but before your vehicle is halfway out of the parking spot. This typically corresponds with when your rear bumper is about even with the rear bumper of the vehicles next to you (C). By waiting until this point, you give yourself adequate space to maneuver without risking damage to the vehicles around you.
It's crucial to always check your surroundings for pedestrians and other vehicles before and whilst executing this maneuver. Always adjust your speed accordingly, moving slowly and steadily to maintain control. Remember to be cautious and use your mirrors to better judge distances, and if available, a backup camera can greatly assist in this process.
In summary, to safely and effectively back out of an angle parking spot, wait until your rear bumper is even with other vehicles, then appropriately turn your wheels while maintaining awareness of your environment.