What must you do when approaching a roundabout?

Answer: A — Yield to traffic already in the roundabout

When approaching a roundabout, yielding to traffic already in the roundabout is essential for several reasons. Roundabouts are designed to improve traffic flow and reduce the likelihood of collisions. By giving way to vehicles that are already circulating in the roundabout, you ensure that you do not disrupt the flow of traffic and contribute to safer driving conditions. This practice also allows you to assess the situation and make a safe entry into the roundabout when there is a sufficient gap in the traffic. It is crucial for maintaining an orderly movement of vehicles and preventing potential accidents. Understanding this rule is vital for navigating roundabouts confidently and safely. Other options, such as entering the roundabout without stopping, may lead to unsafe interactions with other vehicles. Speeding up to merge can create conflicts with other drivers, and using a turn signal only when exiting does not communicate your intentions effectively to others, which is important for clarity and safety in shared driving environments.