Many large cities suffer from severe air pollution caused by vehicle emissions. To address this, several European capitals have established "low-emission zones" — designated areas where only vehicles meeting strict pollution standards are allowed to enter. Air quality measurements taken after these zones were introduced have shown noticeable improvements.
Which choice best describes the structure of the text?
- A
It compares two cities' approaches to traffic management.
- B
It defines a term and provides three counterexamples.
- Ccheck_circle
It identifies a problem, describes an intervention, and reports its outcome.
- D
It traces the historical development of urban planning.
Explanation
Pollution problem → low-emission zone solution → measurable result. B captures this three-part structure.