This is an example of irony
I think the dominant irony presented in the passage would be :
The Houyhnhnms. the most rational beings on earth, are discussing the extermination of an entire group of creatures.
You can see that in this sentence, the second part of the statement contradict the statement on the first part.
He doesn’t believe santiago wants to travel to Africa
"Servant to Servants" is a poem that was actually written by Robert Frost and in this poem, the speaker engages herself in an appreciation for her husband. The answer for this would be option D. Hope this answers your question.
The answer is d it was difficult but i figured it out after i took a test hope it helps u