What is verbal irony?
O
A. The feelings or associations suggested by a word
O
B. Information the audience has but the character does not have
O
C. An action in a story that has the opposite effect than what was
intended
O
D. The use of a word or phrase to convey a meaning that's different
from the literal meaning

the audience knows that nora is intentionally failing to dance correctly, but helmer doesnt

most likely the answer would be a.) cupidity

definitions:

cupidity - greed for money or possessions

hydrophobia - extreme or irrational fear of water, especially as a symptom of rabies in humans

pathology - the science of the causes and effects of diseases, especially the branch of medicine that deals with the laboratory examination of samples of body tissue for diagnostic or forensic

patho -   relating to disease