IELTS reading detail Practice
Exposure to blue-wavelength light at night is particularly problematic because it...
Question type: sentence completion · Difficulty: intermediate
- A. consumes more energy than other light colours.
- B. is difficult for older adults to see clearly.
- C. interferes most with melatonin production.
- D. attracts insects away from agricultural areas.
Explanation Preview
Paragraph C states that 'Exposure to light at night, particularly blue-wavelength light... suppresses melatonin production.' This directly links blue light to the disruption of this crucial hormone.