Answer:
They vary the length, complexity, and mode or sentences for dramatic effect.
Step-by-step explanation:
When creating tone, poets will vary lengths and the complexities of sentences and will shift the mode to create emotional effects. It would not make sense for the writer to put multiple questions in a poem. Additionally, writers usually do not write when addressing the reader, but in third person. Finally, writers tend to vary their sentences to create effects on the readers. They would not purposely just use long sentences. :)