Answer:
A: simile.
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.
The sentence that combines the two sentences using a present participial phrase is B) Stretching eight feet, the sunflower reaches all the way up to my window.
This is the only sentence where you can find the present participial phrase - <em>stretching eight feet. </em>
