Select the most appropriate option to fill in the blank.
The guard insisted ______ seeing the ID card of the visitor.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. on.
Context: The verb "insist" is typically followed by the preposition "on" when it is used with a gerund (verb+ing form).
Meaning of the words:
To: Shows direction, purpose, or recipient – not correct in this structure.
For: Indicates purpose or benefit – incorrect here.
On: Correct preposition used after “insist” when followed by a gerund (seeing).
With: Indicates association – not appropriate here.
Correct word: On
Reason: The phrase "insist on + gerund (verb+ing)" is grammatically correct and conveys the idea of demanding something.
Final Sentence: The guard insisted on seeing the ID card of the visitor.
Hence the chosen option is correct.