Final answer:
The purpose of the new legislation is primarily to reduce commute times and improve air quality, along with other goals like promoting economic efficiency and green technology initiatives as part of South Korea's comprehensive environmental and economic sustainability plan.
Step-by-step explanation:
The purpose of the new legislation passed by the mayor's office in South Korea aims to address various aspects of environmental and economic sustainability. The initiatives include a comprehensive overhaul of energy and transportation networks and government funding to support the development of smart, green technology and environmentally friendly infrastructure. The goal is multifaceted, seeking not only to reduce environmental impacts but also to boost the economy through green manufacturing exports. Specifically, reducing emissions with energy efficiency, promoting renewable energy, and improving public transportation are core components of the legislation.
Therefore, the most accurate answer to the student's question is option 2) To reduce commute times and improve air quality, although the legislation encompasses broader environmental and economic goals as well.