The scenarios that are examples of verbal irony are:
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Haleed put his father’s white lab coats into the washer and started the machine. When the washer stopped, he noticed that everything was pink. He pulled out a red T-shirt and said, “I guess it’s Dad’s chance to be a fashion trendsetter.” - This is verbal irony because Haleed's statement is sarcastic; he is commenting on an unfortunate and unintended consequence (the color change) in a humorous way.
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Laura moved to a new apartment that had a tiny garden where she could plant a few flowers. She bought some seedling flower plants and planted them one afternoon. The next morning, she checked on them and saw only a few short stems. “It’s good to see that the rabbits enjoyed my flowers,” she said. - This is verbal irony as Laura is expressing her disappointment in a humorous or sarcastic way, suggesting that the rabbits' enjoyment of her flowers is a positive outcome when in reality it is not.
The other scenarios do not contain verbal irony as they lack the contrast between literal meaning and intended meaning.