Answer :
" O wild West Wind, thou breath of Autumn's being" I believe is the correct answer it is comparing two things without using like or as.
Answer: A) "O wild West Wind, thou breath of Autumn's being."
Explanation: A metaphor is an indirect comparison between elements that aren't obviously related. It has the function of creating an image in the reader's mind, and help to explain a point. A simile is also a comparison but it relies in words like "like" and "as" to compare the elements. From the given lines the one that is an example of a metaphor is "O wild West Wind, thou breath of Autumn's being" it compares the west wind with the breath of Autumn, without using "like" or "as."