medium · SAT Reading & Writing

Environmental scientist Dr. Linda Park argues that the increase in local temperature in urban areas—known as the 'urban heat island effect'—is primarily driven by the lack of evapo-transpiration from plants rather than the heat-absorbing properties of asphalt and concrete.

Which finding, if true, would most directly support Park's argument?

  1. Many cities have implemented 'green roof' initiatives that encourage building owners to plant gardens on the tops of their structures to improve air quality.
  2. The urban heat island effect is most pronounced during the summer months when air conditioning usage is at its peak in high-density residential areas.
  3. A new type of 'cool pavement' designed to reflect sunlight was found to reduce local street-level temperatures by up to five degrees in direct sunlight.
  4. Urban parks consisting of shaded lawns showed significantly lower surface temperatures than parks consisting of paved plazas, even when both used similar amounts of shade.

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