B C and D are all good answers but most likely it would be D because the writer of a diary isn’t expecting to have their work published.
Us is correct answer. Us is a pronoun. Direct object is a word or group of words that is acted on by a subject.
For Example of direct objects: Monica hit the ball. Raul carried his books in a backpack.
Hope this helps, and Thank you.
The theme is the message. I always used to think the theme and then you make the me and then you make the message.