Um what...? Do u need help
I am sorry, but are you looking for the definition of audience or do you mean something else? If so be more specific. Is there a story, a book, or a certain thing that must have more detail than this. I don't mean to be rude. I can help you once you tell me what you mean and give me more info. Thanks!
C. climax is the correct answer
In the poem, Tennyson refers to both Ulysses and Achilles. This technique is called B. allusion in literature.
When you use allusion, you are referring to people or places outside of the novel or essay, or whatever it is you are writing. And since Ulysses and Achilles are not Tennyson's characters, he is alluding to them when he mentions them in his poem.