In New Zealand, if you intend to go straight through a roundabout, you do not actually need to use your turn signal when entering the roundabout. However, when you are preparing to leave the roundabout, specifically before you pass the last exit, you must signal left to indicate that you will be exiting the roundabout. This rule ensures the smooth and safe flow of traffic, as it clearly communicates your intentions to other drivers, reducing confusion and potential accidents near the roundabout. Therefore, the correct answer to this issue is:
Correct.