Select the most appropriate preposition to fill in the blanks for the given sentence.
Linn's birthday is ______ the end of March.
DSSSB - 2023,
Answer: B
The preposition is 'at'. We say 'at the end of March' for a point of time, as in 'at the end of the month'. 'On' is used with days and dates, 'in' with months and years as a whole ('in March'), and 'by' means not later than a time, which does not make sense with 'birthday is'. So 'at' is right.
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