Over exaggerated
In the context of this passage, which is talking about how Facebook is attempting to cut down on incorrect, fake, or 'sensationalized' news, the word clearly means news that is not true or over exaggerated in a way that makes it 'click bait'-something that isn't clear, objective content.
Vertical can be replaced by Upright
I would say that your answer or the answer is creditable and true
The Purpose Of A Conclusions Is To Sum Up Everything That What Said In The Piece Of Writing
Probably bebop or hard bop