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.
Hey Amelia, I think no one has responded because you did not include the possible answers to this question. If you want to PM me you can.
The answer is C, because it informs that since people are sharing information very quickly through the internet, it is <em>also bringing young people closer</em><em> </em><em>together than ever before</em>. In A we read that they are bringing people closer together, but the teenagers are <em>only included</em>. In B it is just mentioned that the tenagers are <em>generally brought together</em>.
<span>to share a memory about eating fish cheeks</span>