Select the most appropriate meaning of the given idiom.
Call it a day

Correct option is A

The correct meaning of the given idiom is "To stop working on something for the day."
Explanation:
· Call it a day means to decide to stop working or doing an activity, usually because the work is finished or one is tired (Hindi: "दिन का काम समाप्त करना").
Example:
· After working for ten hours, they decided to call it a day and go home.
Incorrect Options:
· (b) To work for a long time – Incorrect; it means the opposite.
· (c) To finish an unfinished work – Incorrect; it does not imply completion.
· (d) To call someone on a particular day – Incorrect meaning.