The theme is the moral or the lesson of the story. After reading the story, which of the answers gives you a lesson that is universal (can apply to anyone) and fits with the story. For example, one could say that the moral of Finding Nemo is "always listen to your parents as they know best". No specific details like names or places are given in the theme.
Circe is jealous that Odysseus is leaving her for a mortal and would rather keep him stuck on the island out of spite.
A living, breathing audience makes speechmaking one of the most personal, exciting, and empowering forms of communication
• Speakers who fail to connect with their audiences will also fail to achieve their purpose; your purpose should not be fixed or inflexible; the more your learn about your audience, the more likely you will modify your purpose in small ways or even change it radically
The answer is probably a noun clause, like the person said above, but none of the words are bolded