English Language · English
Read the following passage and identify what it is primarily about: 'Subway systems around the world provide rapid transit for millions, but they also harbor hidden health hazards. Commuters are regularly exposed to high levels of airborne particulate matter, steel dust from tracks, and poor air circulation. Studies indicate that spending prolonged periods in these underground environments significantly increases the risk of respiratory and cardiovascular issues.'
- 1Environmental pollution caused by surface railroads
- 2The health risks associated with subway environments✓
- 3The economic benefits of subway transit
- 4Metro life and modern subway facilities
Correct answer
The health risks associated with subway environments
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