The elements of the setting that are the most influential to the story is literary device.
A literary device is defined as the elements that give meaning and feeling to the literary work.
Because as a literary device is defined as the elements that give meaning and feeling to the literary work. There is the use of symbolism in this excerpt. As the narrator tells us about the lookout for the mendicancy squad, the symbolism presents the visual representation of the things in this excerpt, like the letter- box, but there is no letter in it, and the electric button from which no mortal finger could coax a ring. All this gives the representation of the literary device, that is symbolism in the excerpt. Thus, the elements of the setting that have the greatest impact on the story are literary devices.
Hence the correct answer is, literary device.
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