Answer: The correct answer is option C. "Satan must blur the line between what is good and what is evil".
Explanation: In the poem "Paradise Lost" by John Milton, Satan is the first major character introduced in the text. He is a tragic figure, one angel that tried to rule out God. One of the motivations of Satan is to blur the line of good and evil defined by God, because God allows evil to occur but he makes good out of evil.