For those who are creating and using green chemistry, the hierarchy looks like

• A. Source Reduction and Prevention of Chemical Hazards; 2) Treating chemicals to render them less hazardous before disposal; 3) Disposing of untreated chemicals safely and only if other options are not feasible
• B. Recycling; 2) Incineration; 3) Landfilling
• C. Disposal; 2) Treatment; 3) Prevention
• D. Energy recovery; 2) Reuse; 3) Disposal

Answer: (A)