No; a prepositional phrase begins with (or includes) a preposition such as "of", "through", and "around".This sentence does not have a preposition within it, so, no, it is does not have a prepositional phrase.
Answer:
Humans living in or near the town.
Explanation:
Rachel Carson's short fairytale "A Fable For Tomorrow" is one of her collection of stories in her book "Silent Spring". This fable pictures a town full of life that suddenly changes to a deserted town after numerous maladies and illnesses overtook it.
Though the story started off with a quaint, nice, and peaceful town, it slowly progresses into a deserted, imaginary town. This was because of the <em>"a white granular powder [that] had fallen like snow upon the roofs and the lawns, the fields, and streams."</em> Though Carson admits in the end that this is no real story of any town, in particular, it still can be a possibility in many parts of America. And the source of this <em>"white powder"</em> is, as Carson wants to point out, the frequent use of pesticides and chemicals by humans.
Thus, the correct answer is the last option.
Seems to me that the second option looks as if it were correct. While paraphrasing and summarizing, you are trying to shorten up an original piece of writing. Giving a well developed descriptions of main ideas isn't something to look for in paraphrasing, so that's why the first option is incorrect. In addition, restating basically everything from a text is not called paraphrasing nor summarizing, and that is why I'd rather classify it as copying.
A is the answer i am pretty sure