Foundation
English
Vocabulary
Vocabulary
Reading Comprehension
Question
Find the option that most closely describes the phrase in quotes.

By raking up the same issue again, the politicians are 'flogging a dead horse'.
Getting together for a show of strength
Showing that they have no new issues
Trying to raise an issue no longer relevant
Trying to raise a relevant issue
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Solution
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'Flogging a dead horse' means to waste effort on something when there is no chance of succeeding. 
So, the most appropriate answer is B) trying to raise an issue no longer relevant.