❓ 문제 According to the passage, which of the following factors directly contributes to the formation of urban heat islands?
- A. A. The high albedo of urban surfaces that reflects solar radiation.
- B. B. The absence of vegetation that reduces the cooling effect of evapotranspiration.
- C. C. The increased use of renewable energy sources in cities.
- D. D. The natural ventilation provided by the canyon-like geometry of buildings.