Question

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%.

• A. reduce the sensitivity of our taste buds to salt and sweet by upto 30%
• B. reduces the sensitivity of our taste buds for salt and sweet by upto 30%.
• C. reduces the sensitivity of our taste buds to salt and sweet by up to 30%.
• D. reduces the sensitivity of our taste buds for salt and sweet by up to 30%.

Answer 1

The correct option is C reduces the sensitivity of our taste buds to salt and sweet by up to 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'.