The question is from CAT Sentence Correction. CAT exam has not been testing Sentence Correction for the past 5 years. It is still important to better understand English Grammar. Solve CAT Questions from Sentence Correction to get more practice and 2IIMs CAT questions bank provides you with CAT questions from Sentence Correction that can help you gear for CAT Exam.
Question 24: During flight, the combination of low air pressure and humidity in aircraft cabins reduce the sensitivity of our taste buds for salt and sweet by upto 30%.
'Combination' is singular, so the verb associated with it is 'reduces'.
'Sensitivity to' is the correct usage, not 'sensitivity for'.
Finally, 'upto' is not a word in English. It is written as 'up to'.
The question is " Choose the grammatically correct option "
Choice C is the correct answer.
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