In a character vs. character conflict, the antagonist is most likely a(n)
1.force of nature
2.person
3.societal rule
4.evil person

4. evil person, because usually a character vs. character means protagonist vs. antagonist. 

A protagonist usually is a good person, for example the Flash or Harry Potter
An antagonist is usually the villain, like Zoom or Voldemort

4. Evil Person because there would be the antagonist would be evil

Iwould say a but i don’t know what words are underlined