Final answer:
When entering and exiting a roundabout, you must always give way to vehicles already on the roundabout, signal your intentions, and keep to the left.
Step-by-step explanation:
In the context of a roundabout, when entering and exiting, you must always:
- Give way to vehicles already on the roundabout: This means yielding to the vehicles already in the roundabout and waiting for a safe gap to enter or exit.
- Signal your intentions: Indicate your intention to turn or exit by using appropriate signals to inform other drivers.
- Keep to the left: In countries where driving is on the right-hand side of the road, vehicles in a roundabout should keep to the left-hand side.
Therefore, the correct answer is All of the above.