What should you do when approaching a roundabout?

Answer: B — Yield to traffic already in the roundabout

When approaching a roundabout, the proper action is to yield to traffic that is already circulating within the roundabout. This is crucial for safety and ensures smooth traffic flow. Vehicles within the roundabout have the right of way, and by yielding, you allow them to continue moving without interruption. This helps prevent accidents and encourages efficient use of the intersection. Other actions, such as entering without stopping if your turn is next, do not consider the precedence of vehicles already in the roundabout, which could lead to collisions. Stopping completely before entering is often unnecessary unless traffic conditions require it, as the goal is to keep the roundabout moving. Lastly, signaling to exit is essential but should be done when you are actually leaving the roundabout, not beforehand. Proper yielding maintains order and promotes safe driving practices in roundabouts.