D. it clearly connects ideas
Parallelism is when the same grammatical or sentence structure is used for a list of ideas or items. By using a similar grammatical structure the reader's brain automatically makes a connection between the ideas because of the similar structure. Caesar's famous line "I came. I saw. I conquered." is an example of parallelism. Each of the sentences has the format subject-past tense verb.
In this poem, the author describes the "music" that the movement of the black girl brings to our ears. He talks about the way in which the girl's playing makes her braids move, and he describes this musicality by using words such as "symphony","crescendo", and "movement." These words are employed as imagery, and their effect is that they create an image in the mind of the reader. This image contributes to the meaning of the poem by portraying the vivacity and cheerfulness of the girl.
The source that will most likely provide the most current information is D, a news website.