Final answer:
The best way to deal with solid waste environmentally is not to generate it in the first place, avoiding the need for disposal methods like landfills and incineration, which can lead to contamination and pollution.
Step-by-step explanation:
The environmentally best way to deal with solid waste is c. Don't generate it to begin with. This approach, also known as waste prevention or source reduction, is the most effective method because it eliminates the waste before it's created, thereby reducing the need for disposal or recycling methods like landfills and incineration, which can lead to more pollution and environmental harm.
Landfill and incineration are the two primary means of waste disposal in the United States. However, landfill sites risk groundwater contamination as they fill up, and incineration can release carcinogens into the air. Thus, preventing waste generation helps avoid these issues altogether.
Recycling is another important strategy. While not as ideal as reducing waste in the first place, it's a cost-effective solution that can significantly lessen environmental contamination from materials such as plastics and glass.