Select the most appropriate meaning of the given idiom.
A red letter day

Correct option is D

Option (d) is the correct meaning of the given idiom.
Idiom: A red-letter day – A day that is memorable for good or special reasons. (एक यादगार और शुभ दिन)
Example: The day I got my first job was a red-letter day in my life.
At least 3 related idioms:
· Once in a blue moon – Very rare occasion.
· On cloud nine – Extremely happy.
· In high spirits – In a cheerful mood.