Select the most appropriate option to substitute the underlined segment in the given sentence. If there is no need to substitute it, select 'No substitution required'.
India has identified a nose-based vaccine against Covid-19 that could be a ‘game-changer’.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. a nasal vaccine.
We need to replace the phrase "nose-based".
Nasal means related to Nose and can be used as a substitution of "nose-based".
Aural means relating to the Ear or the sense of hearing.
Thus, the correct sentence will be: India has identified a nasal vaccine against Covid-19 that could be a ‘game-changer’.