Hey there!
I dont quite get it, Are we trying to find antonyms? And if so, is there an underlined word we need to focus on?
Unless, you are talking about "opposite of".
The prefix that you would find in a word to indicate "opposite of." is "Dis."
A. is science fiction and is a present element.
I think its the last one (to publicize a job opening or look for a job)
I HOPE THAT HELP- -.-