Pick the pair whose two words share the same relationship as the pair given below.
Convalescence : Recovery
Convalescence is the gradual regaining of health after illness, which is simply another name for recovery. The two words are near synonyms, so the correct option must also be a pair that means practically the same thing.
The synonym relationship makes Operation : Surgery the answer.
If the price of a commodity increases by 25%, by what percentage should the consumption be reduced to keep the expenditure the same?