Question 25: Which of the following best paraphrases the underlined sentence in paragraph 1? A. The frequent degradation of air quality to d...

Question 25: Which of the following best paraphrases the underlined sentence in paragraph 1?

A. The frequent degradation of air quality to dangerous levels leads to a severe interruption of public life and a significant, real health threat for the city's millions of inhabitants.

B. Unsafe air quality often results in a severe disturbance to communal activities, a situation which in turn poses a substantial health danger to millions of the city's residents.

C. When the atmosphere often worsens to a hazardous point, it forces a major shutdown of shared activities and also presents a considerable health risk to the millions of local people.

D. The severe disruption of public life, combined with the substantial health threats posed to millions of residents, occurs after local air quality deteriorates to hazardous levels.