Final answer:
You must drive on the left or right side of the island in a roundabout depending on local traffic rules, which typically correspond to the side of the road that traffic drives on in that country.
Step-by-step explanation:
In a roundabout, the correct way to drive is on the left side of the island if you are in a country where traffic drives on the left, such as the UK or Australia, or on the right side of the island in countries where traffic drives on the right, like the US or most European countries. Driving towards the center of the island or in a clockwise direction is incorrect and could cause accidents.