Final answer:
The correctly punctuated sentence is option A, which properly uses quotation marks and a comma. Punctuation in poetry is crucial for conveying rhythm and emphasis, as seen in Frost's poems.
Step-by-step explanation:
The sentence that shows correct punctuation is: A. Last year I memorized "The Road Less Traveled," a poem by Robert Frost. The quotation marks are used to indicate the title of the poem, and the comma is placed inside the closing quotation mark to separate the title from the rest of the sentence.
In the context of poetry, punctuation is vital as it helps convey the intended rhythm, pauses, and emphasis. For instance, Robert Frost's use of blank verse in poems like "The Road Not Taken" resembles prose and spoken word, often leading to a contemplation of life's choices, as suggested by the line "I took the one less traveled by, And that has made all the difference." Frost's work frequently reflects a deep appreciation of nature and the simple things in life, themes that resonate with many readers.