Select the most appropriate option to fill in blank no. 3.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. capacity.
Context: The sentence talks about how ammonia, a chemical additive in cigarettes, increases the ability of nicotine to enter the body (specifically, through the nose). We need a noun that describes nicotine’s potential or ability to enter the nose which is best conveyed by the word “capacity.”
The ability or potential to enter is best expressed by “capacity.”
Hence, the chosen option will be correct.