She is referring to her brother, Polynices, who was killed in the battle known as the Seven Against Thebes. King Creon (or Creonte), who is also Antigone's uncle, is actively preventing her from seeing her brother and ensuring a proper burial.
The best (and correct) answer choice is: [A]: "abrasive" .
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Note: In the question, the word "mew" is a typo and should be "new", methinks.
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Explanation:
Boo Radleys brother, Nathan Radley, fills up the knothole with cement.