Hi!
A preposition is going to be a word which will connect either a noun, noun phrase, or a pronoun to another section of a sentence.
Some common prepositions are <em>with, like, through, over, </em>and <em>about. </em>
With this in mind, option C contains the preposition about!
Hopefully, this helps! =)
A for sure and E possibly?
I can give you some ideas of what you can right about but its all on you or you could just ask your teacher
there are
Hobbies you can talk about
food
sports
family
somehting like that