Answer: "so Eden sank to grief"
Explanation:
The garden of Eden was where Adam and Eve betrayed God, so it makes sense for it to sink "to grief"
The line from "Nothing Gold Can Stay" that contains an allusion is, so Eden sank to grief.
Allusion refers to imaging something without referring to the context directly. Because allusion refers to imaging something without referring to the context directly. So, in the line so Eden sank to grief, it creates an allusion of biblical reference about the Garden of Eden, where everything was perfect until Eve ate the fruit from the Tree of Knowledge. So with this line poet creates an allusion of nothing good can last as long as its the part of human existence. And the poet express this with just this line so Eden sank to grief.
Therefore, sixth option is the correct answer.
To learn more about Allusion,refer here :
https://brainly.com/question/11507587
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