Which pollution-control technology was noted as being proposed under a Clean Air Act amendment?

Which pollution-control technology was noted as being proposed under a Clean Air Act amendment?

• A. The use of catalytic converters
• B. The use of carbon capture
• C. The use of mechanical filters
• D. The use of scrubbers

Answer: (A)

Emissions control for cars was a major focus of the Clean Air Act amendments, aiming to dramatically cut mobile-source pollution. Catalytic converters were introduced as a required technology for new vehicles to meet stricter exhaust standards. They work by using catalysts to convert the harmful pollutants—carbon monoxide, hydrocarbons, and nitrogen oxides—into less harmful substances like carbon dioxide, water, and nitrogen before the exhaust leaves the tailpipe. This directly addresses the pollutants targeted by the act and represents a policy-driven technology adoption for vehicles, which is why it’s the best answer. The other options are more related to different contexts: carbon capture is typically discussed for large stationary sources like power plants and CO2 mitigation, while mechanical filters and scrubbers are used in industrial or power-plant settings to remove particulates or SO2, not the vehicle-focused amendments highlighted by the Clean Air Act.

Emissions control for cars was a major focus of the Clean Air Act amendments, aiming to dramatically cut mobile-source pollution. Catalytic converters were introduced as a required technology for new vehicles to meet stricter exhaust standards. They work by using catalysts to convert the harmful pollutants—carbon monoxide, hydrocarbons, and nitrogen oxides—into less harmful substances like carbon dioxide, water, and nitrogen before the exhaust leaves the tailpipe. This directly addresses the pollutants targeted by the act and represents a policy-driven technology adoption for vehicles, which is why it’s the best answer.

The other options are more related to different contexts: carbon capture is typically discussed for large stationary sources like power plants and CO2 mitigation, while mechanical filters and scrubbers are used in industrial or power-plant settings to remove particulates or SO2, not the vehicle-focused amendments highlighted by the Clean Air Act.