When changing a flat tire, which of the following should you do?

When changing a flat tire, a critical safety step is to block the wheels. Blocking the wheels ensures that the vehicle remains stable and does not roll unexpectedly, which can lead to serious injuries. This is especially important if the vehicle is on an incline, as failing to block the wheels could result in the car moving and potentially causing harm to the person changing the tire.

While putting the vehicle in neutral gear might seem like a necessary action, it actually poses a risk because it could allow the vehicle to roll if the parking brake is not engaged. Therefore, focusing on blocking the wheels helps to create a secure environment for the tire change process.

Prioritizing safety when dealing with vehicle maintenance is crucial, and blocking the wheels is a fundamental practice that reinforces this safety. This is why the correct answer highlights the importance of ensuring the vehicle does not roll while the tire is being changed.