The answer is B, it is based on people and events that are real.
Answer:
Difficult part is to determine which variable is affecting the other and up to what extent.
Explanation:
The most difficult part to calculate while determining correlation is to access which variable is impacting the other variable/variables.
Thus, a Factor analysis is carried out to determine the relation of each variable with the other variables.
Answer would be conflict. Antagonist is essentially the protagonist's enemy.