In the question bellow choose the expression or word which best completes each sentence:
The principal remarked that it was the high standard of discipline that was instrumental .... the high percentage of passes in the school
upon
to
with
on
in
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Someone or something that is instrumental in a process or event helps to make it happen. The Senator was instrumental in the release of some of the hostages. Instrumental music is performed by instruments and not by voices.
If you see Instrumental + Action (-ing) → Pick IN.
If you see Instrumental + The Goal (Noun) → Pick TO.
Since "the high percentage" is a thing (noun), the "To" bridge is the one you want to walk across!
The correct answer is E. in not Bto Why “in”?
Because “instrumental in” is a fixed expression in English meaning a key factor in causing something.
Instrumental in + result.
Those other prepositions (upon, to, with, on) don’t carry the meaning of causing the result.
