Which statement best captures a core goal of green chemistry?

• A. Minimize waste and design for safer chemicals
• B. Increase energy consumption during reactions
• C. Always use rare earth metals
• D. Ignore solvent selection

Answer: (A)

Green chemistry aims to minimize the environmental footprint of chemical processes by preventing waste and choosing safer chemicals and ways to carry out reactions. Reducing waste is a central goal because less generated waste means less pollution and lower disposal impact, making the entire process more sustainable. Designing for safer chemicals means selecting reagents, solvents, and products with lower toxicity and hazards, and adopting conditions that reduce risk to people and the environment. The statement captures both of these essential aims, so it aligns best with what green chemistry tries to achieve.

The other ideas conflict with green chemistry principles: increasing energy use goes against improving energy efficiency; always using rare earth metals raises environmental and supply concerns; and ignoring solvent selection ignores a major source of hazard and waste in many chemical processes.