Final answer:
The third paragraph likely offers historical context and background information or personal anecdotes to develop key concepts, both of which help set the scene or depict the human element of the Little Rock Nine narrative.
Step-by-step explanation:
To analyze how the sentences in the third paragraph develop the key concepts, we must look at the nature of the content they provide. In relation to the Little Rock Nine, if the paragraph is offering historical context and background information, it fulfills the role of setting the scene and giving readers a framework to understand the subsequent details. This could include information on the events leading up to the situation, relevant legislation like Brown v. Board of Education, or the societal climate of the time. If the paragraph is giving personal stories or anecdotes, this brings a human element into the narrative, helping readers to form an emotional connection with the individuals involved and to grasp the personal impact of the events. Anecdotes would show the subject 'in action' or portray others' thoughts about the events. In contrast, if the paragraph relies on statistical data, it's building an evidentiary foundation to support an argument, likely related to the impacts or magnitude of the events surrounding the Little Rock Nine. Lastly, quotes from experts would add authority and a professional perspective to the story, broadening the understanding of its significance. Based on the information provided, it seems like the paragraph in question is most likely providing background information and anecdotes, aligning most closely with option A or option C in the multiple-choice list provided.