D, I believe, since the others do not make sense if you read them.
The answer is
C) It is dark and treacherous, while the courtyard is hot and sunny.
Oedipus' self-inflicted blindness symbolizes his foolishness and inability to see clearly what stood before him. Famed for his commonsense and clear thinking, Oedipus has been revealed all too human. Blinding himself is his way of taking responsibility for his part in his father's death and a symbol of new found wisdom. ;)
