Answer:
It's C
Explanation:
Principle is equivalent to main rule or standard in option C
In any story, or a specific one?In general, a protagonist is the main character, the person who takes the center-stage in a story. For example, Katniss in the Hunger Games, or Holden Caulfield in the Catcher in the Rye
It doesnt really matter. Your spending the same money no matter how you pay.