The correct answer is C. pity.
The drama Antigone is written by Sophocles in a tragic mood to evoke the feelings such as pity and fear within the audience. Allusion is being used towards Hades and Acheron that would create the feeling of pity for Antigone.
When Antigone chose not to obey Creon's law and buried her brother led to her arrest. Creon changed the way of Antigone's execution from being stoned to death he would place her in a tomb where she would die eventually.
So these lines quoted by Antigone create a sense of pity for her condition.
