The reason why it is important that "the story of an Hour" takes place in the nineteenth century is that In the nineteenth century, women were not considered equal to men.
We can see many moments through the story where it is shown with the character's attitude and social interaction that women were not seen as equal to men and that they were supposed to be raised to become housewives and mothers.
The other options are not correct because they don't really represent a nineteenth-century exclusive trait in comparison to nowadays.
The audience at the first Royal Nonesuch performance didn’t retaliate against the duke and Dauphin because they are embarrassed about being ripped off and do not want others to know. This can be found in Chapter 23 of The Adventures of Huckleberry Finn by Mark Twain, when the duke and the dauphin end their show after only a brief performance.
Answer:
That night when Léonce returns from Klein's hotel, cheerful and talkative, Edna is already asleep. His entrance wakes her and he tries to elicit responses to his gossip despite her sleepiness.