Choose the option that fills the blank with the most suitable word:
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 A)with is correct as it indicates a description. The other options are wrong as in, as, and for indicate the inside of an area, a reason, and a purpose respectively. These uses don't fit in the given question. The correct answer is A)with.