What indicates right-of-way at a roundabout?

Answer: C — Vehicles inside the roundabout

In a roundabout, vehicles that are already inside have the right-of-way and should be allowed to continue moving without yield. This design helps maintain a smooth flow of traffic. When approaching a roundabout, drivers must yield to those vehicles that are currently circulating within it. This rule is in place to reduce congestion and prevent accidents. Vehicles entering the roundabout need to be cautious and look for gaps in traffic to enter safely, as they are required to yield to any traffic already in the circle. Therefore, recognizing that traffic inside the roundabout has the right-of-way is crucial for drivers to navigate these intersections effectively and safely.