Fill in the blanks with the most appropriate words.
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)grow up/ for is correct as up and for indicate age and intention respectively, The other options are wrong as no other verb other than grow can be used in the first blank and in, at, and on indicate inside, a specific location, and a surface respectively.. These uses don't fit in the given question. The correct answer is C)grow up / for.