What can help save fuel and reduce pollution?

The selected combination is correct because each of the three choices contributes to saving fuel and reducing pollution, which aligns with the principles of sustainable driving outlined in German traffic regulations.

1. Paying attention to fuel consumption when purchasing a vehicle is important as it helps ensure that drivers choose more efficient cars, which consume less fuel and generate fewer emissions.

2. Contributing to a constant flow of traffic by thinking ahead and driving correspondingly minimizes stop-and-go situations, which can lead to higher fuel consumption and increased emissions due to unnecessary acceleration and braking.

3. Using public transport, cycling, or walking where possible reduces reliance on motor vehicles, thereby decreasing overall fuel consumption and pollution levels.

Understanding and employing all three strategies helps support broader environmental goals and complies with regulations aimed at promoting eco-friendly driving practices in Germany.