What should you NOT do if a tire suddenly goes flat or blows out?

Answer: A — Brake hard

If a tire suddenly goes flat or blows out while you are driving, braking hard can cause you to lose control of your vehicle. This is because sudden braking can result in decreased traction between your tires and the road surface, making it difficult to steer properly. Therefore, it is crucial to avoid braking hard in such situations. Instead, you should focus on maintaining control by steering gently, gradually slowing down, and avoiding sudden acceleration which can also lead to loss of control.