On a multiple-lane roadway, which lanes must be used for passing?

Answer: B — Middle and left lanes

The correct choice highlights that on a multiple-lane roadway, the middle and left lanes are typically designated for passing slower vehicles. These lanes provide a safer and more efficient option for overtaking since they are usually less congested compared to the right lane, which is generally used for slower-moving traffic or vehicles preparing to exit. Using the middle and left lanes for passing allows drivers to maintain a smoother flow of traffic and minimizes the risk of collisions that can occur when maneuvering around slower vehicles in the right lane. Additionally, these lanes often have better visibility and the option to merge back into the right lane after completing a pass, further enhancing safety on the road. While other options may suggest passing in various lanes, adhering to this rule helps ensure that all drivers are following the same guidelines, promoting order and predictability in traffic patterns.