Answer:
Imagery
Explanation:
Imagery is a literay device used by author to appeal to the sense of sight of the readers. Using this device, the author is able to create a vivid picture through word choice enabling the readers to see what the author is seeing or wants his/her readers to see.
In the given excerpt, the literary device used by James Joyce is imagery. In his short story entitled 'Araby', Joyce has created a vivid picture through his words, enabling readers to imagine the created scene.
Examples of imagery can be found in phrase such as <em>'We walked through the flaring streets...', 'jostled by loud men and bargaining women...; 'shrill litanies of shop-boys ...',</em> etc.
Thus the correct answer is imagery.
The importance of using a variety of sentence structures is to change up your writing. To make the reader engaged in what you have to say. If your sentence structure is weak and does not vary the reader might get bored. It also better shows your topic.
hope this helps! have a good day!