The answer is C. live in, as the paragraph states where they come. In the first sentence, the phrase "live in" is located, indicating that the main topic is the location of the birds.
I believe the answer is A! Irony is the expression of one's meaning by using language that normally signifies the opposite, typically for humorous or emphatic effect. In this instance, a reward in most peoples opinions is good and the statement suggests otherwise.
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