Read the following passage and answer the questions based on the passage:
Good public transport networks are the pillars of urban sustainability. Buses, trams, and metro lines can transport big groups of passengers without relying so much on private cars – and therefore eliminating traffic snarls and emissions. Integrated fares across modes of travel make it easy to move around: one ticket could pay for bus, train, and bike-share travel. Spending money on exclusive lanes and priority signaling also makes them faster and more dependable. Nonetheless, constructing and retaining such infrastructure requires capital and long-term vision. Equity issues are also important: lines need to serve low-income communities along with commercial hubs so that all citizens have a benefit. Finally, when properly planned, public transportation promotes economic efficiency, social mobility, and a cleaner city.
What is the central idea of the passage?
Show answer & explanation
Correct answer: C
Explanation
The text highlights that public transport reduces traffic congestion and emissions, which are key pillars of urban sustainability.
It explicitly mentions "equity issues," stating that transit lines must serve low-income communities to ensure all citizens benefit.
Based on these text, the central idea is that a strong public transport system is essential for sustainable and inclusive cities.