What should you check before changing lanes?

Answer: C — Your mirrors and blind spots

Before changing lanes, it is essential to check both your mirrors and your blind spots to ensure that it is safe to do so. Checking your mirrors helps you to see the traffic conditions around you, providing an overview of vehicles behind and next to you. However, mirrors do not give a complete picture, particularly of areas directly next to and behind your vehicle that are not visible in the mirror. This is where checking your blind spots becomes crucial. Blind spots are areas around your vehicle that cannot be seen through mirrors, which means that a vehicle may be present in those areas without your knowledge. By checking both your mirrors and blind spots, you can make a safe lane change without risking a collision with other vehicles. This combination of checks is vital for safe driving practices.