D is the sentence where it is used as an interjection. All the other answers use it as a pronoun.
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B is the answer to this question!
A verbal agreement (or oral agreement) is spoken.
In Oedipus rex, sphinx symbolises the Oedipus courage, when Oedipus courageously without being scared of the death accepted the riddle of sphinx. He gave the correct answer of his riddle. Which cause him disappear and he died at that very moment.So it was the courage that caused a great set back to the death.
Ran from at least 1850 to 1930 during the period all wandering in Ukraine were blind