Final answer:
In the given sentence, the cares of the day are being compared to Arabs in the way they fold their tents and leave quietly, this is a figure of speech known as a simile.
Step-by-step explanation:
The sentence: And the cares, that infest the day, / Shall fold their tents, like the Arabs, / And as silently steal away, has enacted a figure of speech known as a simile. A simile makes an indirect comparison between two dissimilar things with the aid of 'like' or 'as'. In this sentence, the poet likens how the 'cares of the day' fold their 'tents' to how Arabs do the same, indicating a subtle and quiet departure. In essence, the cares are not literal Arabs, but their actions are metaphorically similar to the actions of the Arabs, thus a simile is used.
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