If you must walk on a highway, where is the safest place to walk?

Walking on the left side of the highway is considered the safest option because it allows pedestrians to face oncoming traffic. This positioning gives walkers the ability to see approaching vehicles and make quick decisions if necessary, helping to avoid potential accidents. By being able to see vehicles coming towards them, walkers can better assess the distance and speed of the vehicles, allowing them to move out of the way if needed.

In contrast, other choices do not prioritize pedestrian safety. Walking on the right side may not offer the same visibility to oncoming traffic, and while walking on the side with the widest shoulders could provide more space, it does not guarantee visibility of approaching cars. Walking on the side with the highest amount of traffic is inherently dangerous, as it increases the likelihood of being in an accident due to the proximity of fast-moving vehicles. Thus, the option to walk on the left side is the most prudent choice for safety.