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.
There is only one adverb in this sentence, and that is the word increasingly.
Adverbs are used to modify verbs or adjectives - and in this sentence, the word <em>increasingly </em>is used to modify the adjective <em>ineffective.
</em><em />There are no other adverbs in the sentence, so the word <em>increasingly </em>is the only correct answer.
The balloon popped is the sentence therefore C is correct
Answer:
D) Both logical and anecdotal evidence
Explanation: