Answer:
The climax of the story is reached when Percy and Annabeth arrive on Polyphemus' island. They were forced to fight Polyphemus in order to rescue Grover and retrieve the Golden Fleece.
Explanation:
All these sentences use the word "so" correctly except "Flies breathe through holes in
<span> their abdomen or thorax, so do bees.</span>" So should either begin a new sentence of be preceded by "and".
You would cite each source, and use proper quotations in your writing, and the proper format, which is to skip a line when a new character is speaking