Answer:
Della banters with the shopkeepers where she buys groceries
Step-by-step explanation:
The phrase "bulldozing the grocery and the vegetable man and the the butcher" from the Gift of the Magi means that Della banters with the shopkeepers where she buys grocery.
Della always tries to save more by bargaining price with the shopkeepers which she usually feels embarrassed about.
The word "banter" as used is a way of cajoling or playful way of discussing with a person.