Final answer:
The last thing you need to make sure of when making a normal left turn (unprotected) is that there is no oncoming traffic and that there are no pedestrians or bicyclists crossing the road.
Step-by-step explanation:
When making a normal left turn (unprotected), the last thing you should make sure of is that there is no oncoming traffic. This means checking for any vehicles approaching from the opposite direction and ensuring that they have enough time to stop or yield to you. In addition, it is important to check for any pedestrians or bicyclists who may be crossing the road.