What initiative does the CTA promote for sustainability?

The Chicago Transit Authority (CTA) promotes sustainability through various initiatives, and one of the primary focuses is on reducing greenhouse gas emissions. This initiative aligns with overall environmental goals and public transportation's role in decreasing the carbon footprint associated with individual car usage. By providing efficient transit options, the CTA helps to alleviate congestion and lower emissions, making it a critical element in urban sustainability efforts.

Reducing greenhouse gas emissions is a comprehensive approach that not only addresses transportation but also contributes positively to air quality and public health. It involves the implementation of energy-efficient vehicles, the use of alternative fuels, and strategies that encourage greater public transit use among residents.

While the other options include positive actions related to sustainability, they might not encapsulate the broad and critical impact of directly targeting greenhouse gas emissions reduction as the foremost initiative.