While driving, you should use your mirrors to check because:

Using mirrors while driving is essential for safety, and focusing on option B highlights the practical and safety-oriented reasons behind this practice. Mirrors allow drivers to observe vital aspects of their vehicle's condition, including checking tire integrity, ensuring cargo is secure, and verifying the vehicle's placement on the road. This continuous awareness can significantly help in avoiding accidents and ensuring a smooth driving experience.

For instance, checking the condition of tires through mirrors can alert a driver to low tire pressure or other issues that could affect vehicle performance. Similarly, monitoring cargo ensures that nothing is shifting during transit, which could alter the vehicle's balance or lead to potential hazards. Moreover, keeping an eye on vehicle placement is crucial, particularly in relation to other vehicles, lane markings, and road conditions. These practices aid in maintaining control and enhancing overall road safety, making mirrors a vital tool for effective driving, rather than merely an aesthetic feature or a tool for preventing fatigue.