Answer: D. The author refers to the garden of Eden to show that nature's beauty is short-lived.
Explanation: allusion is a literary device that consists in making a brief reference to a person, an event (historical, political, cultural, etc), or a place. In the given excerpt from "Nothing Gold Can Stay" by Robert Frost, we can see that the speaker makes an allusion to a place (the Garden of Eden), this allusion helps to show that nature's beauty is short-lived (like the Eden when it sank to grief).
It means that even it everyone is doing something wrong, it is not right. It is referring to peer pressure, don't do something just because everyone else it doing it.
