The subject would be that marcy likes goldfish, therefore, the goldfish is a noun
The first sentence in the first paragraph plus the rest of the paragraph makes A WRONG.
The last sentence in paragraph 3 makes answer choice B WRONG.
Second to last sentence in the second paragraph makes answer choice C RIGHT.
In the article last two paragraphs it talks about disagreement over whether or not vegan far is "better" but never stated their ways better therefore making D WRONG.
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C - use fertilizers made from plants.
-IL Means not. For example, illegal and illogical.
~JZ
Hope it helps.