In context of environmental management, substitution refers to:

In context of environmental management, substitution refers to:

• A. Replacing hazardous materials with safer alternatives
• B. Storing hazardous materials longer
• C. Dumping hazardous waste
• D. Mixing hazardous wastes

Answer: (A)

Substitution is choosing a safer material or process to reduce risk at the source in environmental management. It means replacing a hazardous substance with a less hazardous or nonhazardous alternative before use, so potential exposure and waste generation drop. This proactive approach prevents problems by design rather than managing them after they occur. For example, switching from a solvent-based cleaner to a water-based one, or using a less toxic pigment in a manufacturing process. The other options describe actions that either keep the hazardous material longer, discard waste improperly, or blend wastes, all of which do not reduce hazard at the source and can create new risks or regulatory issues.

Substitution is choosing a safer material or process to reduce risk at the source in environmental management. It means replacing a hazardous substance with a less hazardous or nonhazardous alternative before use, so potential exposure and waste generation drop. This proactive approach prevents problems by design rather than managing them after they occur. For example, switching from a solvent-based cleaner to a water-based one, or using a less toxic pigment in a manufacturing process. The other options describe actions that either keep the hazardous material longer, discard waste improperly, or blend wastes, all of which do not reduce hazard at the source and can create new risks or regulatory issues.