Final answer:
Miss Ivors says 'Good-Bye' in Irish to assert her heritage and make a political statement matching her brooch in James Joyce's short story 'The Dead.'
Step-by-step explanation:
When Miss Ivors leaves the party early, she says 'Good-Bye' in Irish to assert her heritage and make a political statement matching her brooch. In James Joyce's short story 'The Dead,' Miss Ivors is described as wearing a brooch with the insignia of the Irish Volunteers, a political organization seeking independence for Ireland. Her choice to say 'Good-Bye' in Irish reflects her support for Irish nationalism and her desire to distance herself from English influence.