What should you do if you see a solid white line between lanes of traffic?

Answer: B — Stay in your lane

When you see a solid white line between lanes of traffic, it indicates that lane changes are discouraged or prohibited. This type of line is typically used to separate lanes of traffic moving in the same direction where it is advisable to remain in your lane for safety reasons. Maintaining your lane helps promote orderly traffic flow and reduces the risk of accidents that may arise from erratic lane changes. In contrast, changing lanes quickly could create confusion or lead to collisions, while ending your trip or slowing down significantly is not necessary and could disrupt the traffic around you. Thus, staying in your lane is the safest and most appropriate response when encountering a solid white line.