The correct element is B - evidence. Statistics and other examples can be used as evidence for a research paper.
B, because running is a verb and none of the other sentences have verbs, verbs are action words.
It’s A because the protagonist is more the maim character solving the problem and the antagonist is more of a conflict person
The reason why austrailia is an island is because of continental drift
Bonus fact: Austrailia is the only island/continent to contain only one nation
