Choose the correct meaning for the idiom "once in a blue moon":

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A A very rare or infrequent event.
B A time of great excitement.
C A time of great sorrow.
D A time of great confusion.

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Answer: A. A very rare or infrequent event.

Answer: a) A very rare or infrequent event.
Explanation: This idiom is used to describe something that happens extremely rarely.

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Choose the correct meaning for the idiom "once in a blue moon":

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