Our country is accelerating into the automobile society. Once upon a time, the Chinese regarded driving a car as a mythical thing. However, it was unexpected that in the past ten years or more, tens of thousands of cars had entered the home of ordinary people. Some experts pointed out What follows is not the rapid improvement in our quality, but the rapid decline in the quality of life. Which of the following, if true, would best support the above conclusion? ['Automobile exhaust has exacerbated air pollution. In recent years, more and more haze days have occurred in some areas of China.', 'Road congestion and air pollution caused by too many cars are seriously haunting our daily lives.', 'The use and maintenance of private cars requires a lot of costs, reducing other aspects of household consumption.', 'Drivers must have enough awareness of environmental protection.']