The correct answer is option 4. "Marian Anderson Sings" uses in medias res, while the informational text is organized strictly chronologically.
In medias res is a literary feature that consists on starting the narration of a story at a critical event that is consequence of previous events, instead of starting it from the beginning in a more traditional way. The story will later use flashbacks to narrate the events that led to the present moment of the story. Thus, this technique differs from the strictly chronological order in as much as the plot moves from the present to the past through flashbacks and keeps advancing the narration.
It was a stylistic convention developed by epic poems like Homer's "Illiad", but also by modern writers like Toni Morrison.