Answer:
These lines present dramatic irony because they show information that the public is aware of, but the characters are not.
Step-by-step explanation:
The question above is about "Story of an Hour" where while we, as readers, know that the main character's husband is not dead, she doesn't know. However, when she finds out that her husband is alive, she passes out and has a heart attack that leads to her death. However, this heart attack is not caused by happiness but by the terror of knowing that her husband is alive.
This situation where the reader knows information, but the character does not, is an example of dramatic irony.