In paragraphs 22 to 24, the author uses sarcasm most likely to - emphasize the magic of Sergei's
goldfish regarding its ability for tricks
show how little Sergei has learned
because of his isolation
emphasize how Sergei's poor language
skills contribute to his
misunderstanding
show how dependent Sergei is on the
goldfish for friendship

show how dependent Sergei is on the  goldfish for friendship.

Explanation:

'What, of this Goldfish, Would You Wish' is a short story written by Etgar Keret. The story is about Sergei, who accidentally kills a young lad, Yoni,  and to revive him he had to use his last wish from the goldfish, which would set it free; losing the friendship of the goldfish.

In paragraphs 22-24, the conversation between Sergei and the goldfish reveals that how much Sergei was dependent upon the friendship with the goldfish. The author has used the sarcasm in their conversation to reveal this dependency of Sergei on the goldfish.

Thus the correct option is (D), the last one.

c hydrophobia is the answer