Final answer:
Before changing lanes while driving, quickly turn your head to check your blind spot and ensure it is clear.
Step-by-step explanation:
Before making any move into a new lane while driving, it is important to quickly turn your head to check your blind spot. The blind spot is an area outside of your peripheral vision where other vehicles may not be visible in your mirrors. By turning your head, you can ensure that there are no vehicles in your blind spot before changing lanes.