I believe the answer is number 1
The correct answer is the last one, the cyclops is compared to a mast because of his size. The comparison means that even laid down the cyclops standed out among his sheep, like a mast does at sea. As for the first two options, the cyclops is not compared to Zeus in any moment.
There are many grammar rules but the most essential ones are: nouns, adjectives, verbs, punctuation, and speech.
Answer:
I love this, I didn't find it confusing at all and it was very clear about what was happening. I'm sure your Honors class will adore it!