When backing up a large vehicle, you should
- sound your horn.
- use someone as a guide if possible.
- avoid backing into the blind (passenger) side.
- do all of the above. ✓
Answer: D. do all of the above.
Do all of the above: sound your horn, use a guide when one is available, and keep your backing away from the blind side.
Why this is the answer
The handbook lists several precautions before reversing: turn off the phone or radio, open the windows, turn on the four-way flashers and sound the horn. It also tells you to walk around the vehicle first and to keep the blind spot in mind. A responsible guide helps by watching the area behind you and your blind-spot zone, warning you if pedestrians or vehicles move into your path. Since each of these is part of the same backing procedure, the complete answer is to do all of them, not just one.
Why the other answers are wrong
- A. sound your horn. — Sounding the horn is only one of the steps the handbook lists before reversing, so it leaves out the guide and the blind-spot check.
- B. use someone as a guide if possible. — A guide is helpful but the handbook only says to use one if possible, and it does not replace sounding the horn or watching the blind side yourself.
- C. avoid backing into the blind (passenger) side. — Staying out of the blind side is a good aim, but the handbook also expects the horn and a guide, so this choice covers only part of the procedure.
Remember it
Before you reverse, tick three boxes: horn and flashers on, a guide watching the rear, and your path kept clear of the blind side.