Proper Punctuation would be most likely to help.
Answer:
Green roofs help reduce the Urban Heat Island Effect, a condition in which urban environments absorb and trap heat. A green roof's plants remove air particulates, produce oxygen and provide shade. ... Another important benefit of green roofs is their ability to reduce and slow stormwater runoff in urban environments
Actually the real answer is A to explain the significance of the topic fro the United States.
Answer:
preposition: around. prepositional phrase: around the boat. object of preposition: boat
