Fill in the blank with appropriate compound or phrase prepositions:
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)in order to is correct as it indicates a result. The other options are wrong as regard, compliance, and sake are not the appropriate words to be used in the given sentence. These uses don't fit in the given question. The correct answer is C)in order to.