This is considered an example of expository writing because it informs readers about the public love of Pluto. Thus the correct answer is D.
What is expository writing?
Important research and facts about a subject are presented to readers in expository writing. It helps reader with factual information about the subject.
Sentence D provides information about the public love of Pluto which indicates expository writing.
Therefore, option D is appropriate.
Learn more about expository writing, here:
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