Visualize, if you will. the timeline of American music, It starts in the mid-1700s stretching the line is labeled with a different and unique musical genre—jazz, blues, rock, reggae, soul, and more. Although each of these types of one common thread that runs through them all: they all were originally impacted by music single biggest influence on American music today.
How does this sentence serve the author's purpose?
A. The author attempts to initiate a fun tone for the reader by introducing an interesting snippet of trivia.
B. The author attempts to introduce the reader to the main argument that is discussed in detail in later paragraphs.
C. The author attempts to puzzle the reader by asking the reader to ponder a complex image.
D. The author attempts to engage the reader with her topic by addressing the reader directly.