What can help save fuel and reduce pollution?

The selected combination of answers is correct because all three choices contribute to saving fuel and reducing pollution, which aligns with environmental protection regulations in Germany.

1. Paying attention to fuel consumption when purchasing a vehicle helps ensure you choose an efficient model that minimizes emissions, in line with German guidelines on vehicle standards.
2. Contributing to a constant flow of traffic by driving thoughtfully reduces stop-and-go conditions, which can waste fuel. This practice supports traffic regulations aimed at improving road efficiency.
3. Utilizing public transport, bicycles, or walking encourages sustainable transportation methods, reducing the number of vehicles on the road, and is emphasized in various German traffic and environmental policies.

Each of these choices reflects a proactive approach to responsible driving and environmental stewardship, which is vital in maintaining air quality and reducing carbon footprints as promoted by German traffic laws.