A novel can have loads and loads of conflicts big and small, while a short story has only one conflict. The characters in a novel are usually dynamic and are better described, while characters in short stories are poorly described and are usually static.
The correct answer is option D: A Haggle
If a buyer is haggling a seller for a better price and the seller holds its ground it means that the act of haggling demonstrates they both have competing interests since one of them is interested in buying for a lower price while the other is interested in selling for a higher price.
The answer is B
I am just adding extra stuff here so it can add up to 20 characters