Sentence Correction (SC) | Re: The diplomatic machinery that drives America's day-to-day relations in

The diplomatic machinery that drives America's day-to-day relations in Asia is also creaking.
A) The diplomatic machinery that drives America's day-to-day relations in Asia is also creaking- CORRECT
B) The diplomatic machinerywhich drives America's day-to-day relations in Asia is also creaking. - Incorrect use of WHICH. WHICH is used for Non-essential Modifier. Hence Incorrect.
C) The diplomatic machinery thatdrive the day-to-day relations of America in Asiaare also creaking. - It is incorrect
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