The two scenarios that are examples of verbal irony are:
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Haleed's statement about his father's lab coats: "I guess it’s Dad’s chance to be a fashion trendsetter." This remark is ironic because, instead of a positive outcome (the clothes appearing fashionable), the lab coats are actually ruined (they turned pink), contradicting the statement.
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Laura's comment about the rabbits enjoying her flowers: “It’s good to see that the rabbits enjoyed my flowers.” This is ironic because she is trying to put a positive spin on the fact that her flowers were eaten by rabbits, which is generally seen as a negative outcome for her gardening efforts.
The other scenarios do not contain verbal irony.