What should be observed when positioning the head rests in your car?

You answered correctly. The top of your head should align with the upper edge of the head rest to provide maximum protection in case of a rear-end collision. Additionally, the gap between the back of your head and the head rest should be as small as possible, ideally just a few centimeters, to prevent whiplash. Proper adjustment of the head rest is essential for your safety—it supports your head during accidents and minimizes the risk of neck injuries. The third option, which mentions aligning the upper edge of the head rest with the upper neck vertebra, is incorrect because it does not offer the best protection. Remember these positions when adjusting head rests in any car.