Green chemistry reduces pollution by

• A. Recycling
• B. Bioremediation
• C. Incineration
• D. Source Reduction

Answer: (D)

The main idea is preventing pollution by designing chemical processes and products so that waste is minimized from the start. This approach, often called source reduction, focuses on maximizing atom economy, using safer reagents and solvents, and creating processes that generate fewer hazardous byproducts or emissions. By cutting waste at the source, there’s less need for downstream cleanup, disposal, or remediation, which lowers the overall environmental impact.

Recycling recovers materials after use but still requires energy and processing and doesn’t prevent waste generation in the first place. Incineration destroys waste but can release pollutants and greenhouse gases. Bioremediation cleans up pollution after it has occurred rather than preventing it. Therefore, reducing pollution at the source best aligns with green chemistry goals.