In this paragraph, a white puddle is a simile for snow. If the sentence where white puddle is mentioned is this one: Patches of old snow, scattered here and there, looked like white puddles.
A.
B. and C. both are missing commas in their sentences. A doesn't require a comma anywhere
Sloppy is the answer, i think. correct me if im wrong:)
The answer to your question is form
Answer: In an inverted sentence, the predicate is placed before the subject/noun.