Robinson believes he is punished for what he calls his “original sin”, that is his leaving his family without his father’s consent and by being cast away from the heavenly and trouble-free life that his father guaranteed him. The allusion is that Robinson’s original sin resembles Adam and Eve’s
original sin and his being left on a deserted island without anybody to secure his life is resembled to Adam and Eve’s expulsion from the Garden of Eden. Correct answer is A.