Final answer:
Irony in 'Get Up and Bar the Door' is showcased through the stubborn contest between the husband and wife, where the wife ultimately loses and must bar the door after travelers enter and eat their food.
Step-by-step explanation:
The presence of irony in the ending of "Get Up and Bar the Door" is evident but does not conform exactly to the scenarios presented in the options a, b, c, and d. The traditional ballad tells the comical tale of a husband and wife who argue over who should get up and bar the door.
Ultimately, their stubbornness leads to a scenario in which two travelers enter and eat their food. The irony emerges when the wife finally speaks to chastise the travelers, thus losing the bet and having to get up and do the door herself. The irony lies in the results of the stubborn contest where both wanted to shirk a simple task, leading instead to a more problematic situation.