What can help save fuel and reduce pollution?

The selected combination is correct because each option directly contributes to fuel savings and pollution reduction, which aligns with sustainable traffic practices in Germany.

1. Paying attention to fuel consumption when buying a vehicle encourages consumers to choose more efficient models, which is supported by regulations promoting environmentally friendly vehicles.

2. Contributing to a constant flow of traffic by driving thoughtfully reduces stop-and-go scenarios, leading to lower fuel consumption and emissions, essential for minimizing urban air pollution.

3. Using public transport, bicycles, or walking promotes alternative modes of transportation that are more sustainable and reduce the number of vehicles on the road, thus helping to lessen traffic congestion and environmental impact.

Together, these choices promote eco-friendly behavior in line with German laws aimed at protecting the environment and improving public health.