Each of the following questions has underlined idioms/phrases. Each sentence is followed by four options. Choose the option that best describes the meaning of the underlined idiom/phrase.
I always preferred to study Physics and Mathematics, now choosing Economics and Literature for further studies is **another kettle of fish**.
- ACompletely different matter
- BSlightly different matter
- CCompletely difficult matter
- DDoing things in a hurry
Explanation
The idiom 'another kettle of fish' means a completely different matter or situation. In the sentence, switching from Physics/Mathematics to Economics/Literature is a totally different field. Option (a) 'Completely different matter' captures this exactly. Option (b) 'slightly different' understates it, (c) 'difficult' misinterprets, and (d) 'in a hurry' is unrelated. The idiom emphasizes difference in kind, not difficulty. Hence option A is correct. Cross-checked with Oswaal CDS Yearwise Solved Papers.