Answer: C
Recently did this test
A flock of crow is called murder
The images in this poem convey the author's sadness and longing for his home country because they are rich, colorful, and he describes them with heightened reverence. He even uses the religious image of "mystical skies<span> In benediction over nun-like hills" (meaning it feels like the skies are praying over the hills that look line nuns) to show how much he respects his home land. </span>
allusion is a brief and indirect reference to a person, place, thing or idea of historical, cultural, literary or political significance. It does not describe in detail the person or thing to which it refers.
(i got this from google just to let you know)
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