What is the safest way to approach a roundabout?

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

The safest way to approach a roundabout is to slow down and yield to traffic already in the roundabout. This is crucial because roundabouts are designed to facilitate the flow of traffic while minimizing the risk of collisions. By slowing down, drivers can better assess the situation and make informed decisions on when to enter. Yielding to vehicles already in the roundabout is essential because those vehicles have the right of way. Entering a roundabout without yielding or stopping can lead to dangerous situations, as it increases the risk of accidents with vehicles that are already circulating within it. Roundabouts are often structured to allow continuous flow, meaning that vehicles inside have priority, and this rule is key to maintaining safety and efficiency. Therefore, taking the time to slow down and yield not only promotes safety for the driver but also for all other road users within the roundabout.