How can you tell when it is safe to change lanes?

Answer: A — Check mirrors, blind spots, and signal

To determine when it is safe to change lanes, the best approach is to check your mirrors, blind spots, and use your turn signal. This comprehensive method ensures that you are aware of your surroundings before making a lane change. Checking mirrors allows you to see vehicles behind and beside you, while looking at your blind spots helps identify any vehicles that may not be visible in your mirrors. Using your turn signal communicates your intention to other drivers, which is critical for safety. By combining these actions, you reduce the risk of an accident and ensure a smoother transition between lanes, making it a responsible and safe driving practice. Other options, like only checking mirrors or relying solely on your turn signal, do not provide a complete picture of your environment and can lead to unsafe maneuvers. Changing lanes whenever you want disregards the fundamental rules of safe driving and could result in dangerous situations on the road.