How can you avoid unnecessary noise?

The selected combination is correct because it addresses key methods to minimize unnecessary noise on the road, which is important under German traffic regulations for environmental and community well-being.

1. Replacing worn sideboard hinges or fastenings helps to prevent rattles and noise from vehicles, promoting a quieter driving experience.
2. Correct stowing or use of chains prevents items from shifting, which can also create noise while driving.

Both measures are essential to maintain a peaceful environment and ensure compliance with noise pollution regulations in Germany. The omitted option about increasing tyre pressure is incorrect because it can lead to safety issues and is not related to noise reduction. Understanding and implementing these measures not only fosters better driving practices but also contributes to overall road safety and environmental responsibility.