The answer to your question is c i think but im not positive tbh
In a good paragraph, all the sentences refer to the main idea of the paragraph. So if the topic sentence refers to the main idea of the paragraph, the remaining should too (false).
Cyclops is motivated to do this because Odysseus tricked him and humiliated him, and even had the hubris in the end to mess with him about it. Poseidon is the Cyclops' father so naturally the Cyclops wants help and Poseidon can do it because Odysseus is traveling by sea.