Choose the correct preposition.
He insisted _____ paying the bill.
Explanation
Correct Answer: (c) on
Detailed Explanation
This question tests your knowledge of Fixed Prepositions (words that are naturally paired together in standard English grammar usage).
The verb "insist" establishes a fixed structural pattern when followed by an action or a noun:
insist+on+Noun / Gerund (V1+ing)
In this sentence, "paying" acts as the gerund.
Applying the fixed preposition rule, the verb "insisted" must be followed directly by "on".
Therefore, the complete grammatically correct sentence is: "He insisted on paying the bill."
