What should a driver do when approaching a roundabout?

Answer: B — Slow down and yield to traffic already in the roundabout

When approaching a roundabout, a driver should slow down and yield to traffic that is already circulating within the roundabout. This practice is crucial because it ensures smooth traffic flow and enhances safety. Roundabouts are designed to reduce the likelihood of serious accidents compared to traditional intersections, and yielding to vehicles already in the roundabout plays a key role in maintaining that safety. This approach allows the driver to assess the situation inside the roundabout and safely merge when there is adequate space. Understanding that roundabouts prioritize traffic already traveling within them is essential for effective navigation and reducing the risk of collisions.