C- Two point turnabout
This will allow you to see both sides of traffic to ensure that re-entry is as safe as possible. Doing a U-turn can be very unsafe if not done properly, and does not involve backing or pulling forward into a driveway. Three point turn about blocks the entire lane of traffic, and does not involve a driveway. This is used when there is not other option. Finally, traveling around the block does not involve the backing or pulling forward into a driveway.
This means that a Two point turnabout is the best answer.
I hope this helps! :)
