Among the choices, option B. Hasn't, is a singular contraction. "Hasn't" is the shortened word for "has not". The rest of the choices are plural contractions: Don't from do not, Haven't from have not, and Weren't from were not.
Explain more do not understand PI??
Answer:
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Explanation:
The correct answer should be Slang. Slang words are often used instead of formal words and people who use it often might not even know what formal words could be used instead of slang words.
