In large cities that have air pollution problems the number of emergency department visits for asthma episodes goes up when the air quality is very poor.
What is the BEST way to paraphrase the sentence above?
Responses
A Large cities often have poor air quality.Large cities often have poor air quality.
B Asthma occurrences are not as frequent in the country.Asthma occurrences are not as frequent in the country.
C Several cities with large populations have many asthma-related health problems.Several cities with large populations have many asthma-related health problems.
D Asthma episodes are more frequent in large cities, especially on days of poor air quality.