Final answer:
A roundabout is an intersection control device where traffic circulates around an island. Approaching vehicles must yield to the traffic in the circle. Traffic and Intersection Control is a topic in Social Studies.
Step-by-step explanation:
A roundabout is an intersection control device where traffic circulates around an island. Approaching vehicles must yield to the traffic in the circle. Pedestrians and bicyclists should always be yielded to when crossing. When entering a roundabout, it is important to enter to the right of the central island. Traffic within the roundabout always has the right of way.
Regarding the given information, the subject of this question is Traffic and Intersection Control in relation to Social Studies.