I'd say that the <span>stylistic elements responsible for the stately yet economical effect of these lines from a poem are A. syntax, imagery, and allusion.
There's definitely syntax, because it refers to these short lines. And since I don't see any irony here, I'd choose A.
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I have read this before its the very last one
they both are love stories and both are stories
Answer is A. The main purpose of a summary is to relay the main events/details of the story. If you are missing any needed info, the summary is incomplete