Question

In, "The Gift of the Magi," Della cannot buy Jim a gift. Which best analyzes how this conflict develops the plot?

Answer 1

I don't know if you have answer choices but:
The conflict develops the plot by causing Della to sell something that means a lot to her to display her love for Jim, however in the story this causes a paradox, due to what Jim bought. The conflict develops the plot by created a paradox, and developing characters and the emotions between them. 
Hope this helps!