Answer:
Tree planting can invariably bring down temperatures in urban areas, especially in summers.
Step-by-step explanation:
This is kind of a trick question, because all of these answers can be correct. The answer above isn't necessarily wrong, it's just the wrong answer for this question. Trees can reduce temperatures naturally, particularly through shade and evapotranspiration, which is the evaporation and transpiration of water through soil and plants.
Trees however, are part of the water cycle and do evaporate water and perform transpiration, as well as filtering sediment from erosion through their roots, providing a cleaner runoff into water sources. They can also filter chemicals, heavy metals, and even some oils from roads.