Answer:
A: simile.
Step-by-step explanation:
A simile is a figure of speech that consists in making a comparison between elements that aren't obviously related, this comparison is made using the words "like" and "as." In the given phrase, we can see an example of a simile that is comparing the strength of something with the strength of an ox, using the word "as" to make the comparison. So the correct answer is option A: simile.