Fill in the blank with the appropriate preposition.

She left late
night.
c. at ✔
..............................................................

A preposition is defined as a word or group of words that is used before a noun, pronoun, or noun phrase to show direction, time, place, location, spatial relationships, or to introduce an object.
Examples of preposition :- after, at, before, behind, by, during, for, from, in, of, over, past, to, under, up, etc.
...............................................................
