Which of the following is an example of reducing pollution at the source in industry?

• A. Substituting safer chemicals
• B. Increasing production pace without changes
• C. Dumping waste into waterways
• D. Ignoring regulatory standards

Answer: (A)

Reducing pollution at the source means preventing pollution during the production process by changing inputs or methods so wastes and emissions are minimized before they’re created. Substituting safer chemicals fits this perfectly: by choosing less hazardous substances, the amount and toxicity of waste and air or water emissions are reduced right where they’re produced, cutting pollution before it ever needs treatment downstream.

In contrast, increasing production pace without changes would typically raise the environmental footprint because more materials and energy are used and more waste is generated without any pollution-reduction measures. Dumping waste into waterways is directly adding pollutants to the environment, not reducing them. Ignoring regulatory standards removes important protections and tends to increase pollution and risk.