Correct option is A
The correct meaning of the idiom once in a blue moon is
not very often.
Hindi Meaning: बहुत कम
Example: We used to meet regularly, but now we see each other only
once in a blue moon.
Explanation: The idiom once in a blue moon refers to something that happens very rarely or infrequently.
Meanings of other options:
·
Monthly: Incorrect, as once in a blue moon does not refer to a regular monthly event.
·
Weekly: Incorrect.
·
Very often: The opposite of the meaning.