Answer:
It develops a soothing tone, as the alliteration provides a soft rhythm.
Explanation:
Sara Teasdale's poem "There Will Come Soft Rains" is a poem written in a couplet form. The shirt six stanzas have perfectly rhymed couplets, that talks about the end of human life.
The given lines are from the first stanza, containing alliteration and a perfect end rhymes. It also contains a soft rhythm that develops a soothing tone to the readers, while also the consonance in "swallows circling" and synesthesia provides a sense of perception to the readers. The lines give a calm, soothing and peaceful tone.
