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)after is correct as it means following in order, time etc. The other options are wrong as from, with, and in indicate a source, inclusion, and the inside of an area respectively. These uses don't fit in the given question. The correct answer is A)after.