Good morning. Today we're going to discuss the impact of urban green spaces on mental health. A recent study conducted in Melbourne followed over 2,000 residents for five years. Researchers measured the amount of greenery near each participant's home and compared it with their self-reported stress levels. Interestingly, they found that people living within 300 meters of a park or garden reported significantly lower anxiety, but only if the green space was well-maintained with trees and benches. The effect was stronger for older adults and those who visited the space at least once a week. The study also noted that the quality of the green space mattered more than its size.
❓ According to the lecture, what condition was necessary for green spaces to reduce anxiety?
A. A. The green space had to be larger than 300 meters in area.
B. B. The green space had to be visited daily by the residents.
C. C. The green space had to be well-maintained with trees and benches.
D. D. The green space had to be located near older adults' homes.
✅ 正确答案
C. The green space had to be well-maintained with trees and benches.