To determine which paragraph the bar graph best supports, let's summarize the relevant information in each paragraph:
- Paragraph 4 discusses Noah's initial struggles with selling candy bars and his realization that he sold fewer than Jennifer.
- Paragraph 5 mentions Jennifer encouraging Noah and asserting that he will get better with practice.
- Paragraph 10 highlights Noah's success on Tuesday, where he sells more than Jennifer for the first time.
- Paragraph 11 shows Noah's feelings of exhaustion despite his success.
Since a bar graph typically represents quantitative data, such as sales numbers, it would be most relevant to the paragraph that discusses Noah's sales compared to Jennifer's.
Given this context, the best choice would be (C) paragraph 11, which discusses Noah's success in terms of sales and how he sold more than Jennifer, aligning with what a bar graph would illustrate.