Answer:
A) The narrator mentions "joy that kills" to indicate that Mallard was so glad her husband was not dead that she died of happiness
Step-by-step explanation:
The inference that the reader can make about the narrator's feelings toward Mrs. Mallard's cause of death when she says "When the doctors came they said she had died of heart disease-of joy
that kills" is to indicate that Mallard was so glad her husband was not dead that she died of happiness