Before backing out of a parallel parking space, you should check:
Answer: C — Your blind spot
When backing out of a parallel parking space, it is essential to check your blind spot before doing so. This includes looking over your shoulder to make sure there are no pedestrians or other vehicles in the path of your vehicle. Options A (your mirrors), B (your speed), and D (for other drivers) are also important to consider, but they are not the most critical factor in safely backing out of a parallel parking space.