What is the main environmental concern associated with fuel spills?

The primary environmental concern related to fuel spills is soil and water contamination. When fuels leak or spill, they can seep into the ground and contaminate the soil, which can adversely affect plant life and soil organisms. Additionally, spilled fuel can enter waterways, posing a significant risk to aquatic ecosystems and drinking water supplies. The toxic components of fuel can lead to long-term environmental damage, including the disruption of habitats, killing of wildlife, and contamination of water sources that may affect human health.

The focus on environmental preservation and public health underscores why soil and water contamination is such a critical issue following fuel spills, making it the correct choice in this context.