Answer:
The answer is indeed letter A) disappointment at the loss of her new-found freedom.
Explanation:
"The Story of an Hour", by Kate Chopin, is a short story in which the main character is Mrs. Mallard. She has a heart condition and is in danger of dying in case she is shocked or feels any strong emotions.
Her sister and a friend carefully give her a dreadful piece of news. They believe her husband to have died. They fear that such knowledge might kill Mrs. Mallard, so they break the news slowly. Mrs. Mallard is obviously sad and, wishing to be by herself, goes to her room and locks the door. However, when she looks out the open window, she realizes she is truly free for the first time in her life. She did love her husband, and he also had loved her; but now she would be able to make her own decisions. She wouldn't have to justify or explain herself to anyone any longer.
Happy about her new-found freedom, Mrs. Mallard goes back downstairs only to find her husband, very much alive, walking in. Her heart can't take the disappointment, and she dies. However, not knowing of her epiphany, the others interpret her death wrongly, thinking she died of happiness after seeing Mr. Mallard alive.
