Complete the idioms/proverbs used in the following sentences:

There is no use flogging a __________ horse.

Correct option is B

Option (B) is the correct meaning of the given idiom.

Flogging a dead horse:

Meaning: To waste effort on something that is no longer useful or cannot be changed.
Hindi Meaning: किसी बेकार या असंभव काम पर मेहनत करना।
Example:
There is no use flogging a dead horse; the project has already been canceled by management.

Similar Idioms:

Beating a dead horse
Wasting your breath
Spinning your wheels