Read the passage excerpt. Paragraph 1: When the cafeteria asked students to suggest lunch changes, the comment box filled faster than anyone expected. Paragraph 2: More than half the notes asked for a vegetarian entrée that was not a side dish, and many students suggested adding fruit near the checkout line. Paragraph 3: The manager used those patterns, not the loudest single complaint, to test a new menu for the spring semester. Which choice best explains how Paragraph 2 helps the passage progress from one idea to the next?