Which literary device involves the repetition of words at the beginning of consecutive lines?

The correct choice refers to anaphora, which is a literary device characterized by the repetition of a word or phrase at the beginning of consecutive lines or clauses. This technique is often used in poetry and speeches to create emphasis, rhythm, and emotional resonance. Anaphora engages the reader or listener by reinforcing key themes or ideas, allowing for a deeper connection to the text.

In contrast, a couplet refers to two consecutive lines of poetry that usually rhyme and have the same meter, which does not involve repetition at the beginning of lines. Dénouement describes the final resolution or outcome of a narrative, typically resolving the main conflict, and is unrelated to word repetition. A theme is the central topic or underlying message of a literary work, again not connected to the specific device of repetition at line beginnings. Thus, anaphora is the most fitting choice regarding the repetition of words at the start of consecutive lines.