Fill in the blank with a suitable preposition.
He was going _______ stop the auction from taking place.
A preposition is a word which comes before a noun or a pronoun and establishes a relationship between the elements of a clause or words. Option C)to is correct as it indicates intention. The other options are wrong as from, for, and on indicate a source, a purpose, and a surface respectively. These uses don't fit in the given question. The correct answer is C)to.