Overcrowding and delays during peak hours. City authorities believe that investing in public transportation is a major solution to traffic congestion and air pollution. They have expanded metro lines, improved bus services, and introduced smart ticket systems. In addition, many environmental experts encourage citizens to choose public transport instead of private vehicles. These efforts are expected to reduce carbon emissions and improve the overall quality of urban life. The report is based on a survey of 3,200 residents conducted earlier this year. The findings suggest that although public transport systems have improved significantly, further development is still necessary to meet the growing demand of city populations. Câu 24 What is the main idea of the passage? Chọn một đáp án đúng A Complaints about city life B The role and development of public transportation in cities C The disadvantages of private vehicles D Environmental problems in rural areas

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overcrowding and delays during peak hours.
City authorities believe that investing in public transportation is a major solution to traffic congestion and air pollution. They have expanded metro lines, improved bus services, and introduced smart ticket systems. In addition, many environmental experts encourage citizens to choose public transport instead of private vehicles. These efforts are expected to reduce carbon emissions and improve the overall quality of urban life.
The report is based on a survey of 3,200 residents conducted earlier this year. The findings suggest that although public transport systems have improved significantly, further development is still necessary to meet the growing demand of city populations.
Câu 24
What is the main idea of the passage?
Chọn một đáp án đúng
A
Complaints about city life
B
The role and development of public transportation in cities
C
The disadvantages of private vehicles
D
Environmental problems in rural areas