Final answer:
The sidebar supports the passage by providing additional information sources, historical background, and examples of how critics' works influence interpretations. It offers evidence and suggestions for content improvement to deepen reader understanding.
Step-by-step explanation:
The sidebar in reference likely provides supplemental material that enhances understanding and comprehension of the main text. For instance, by including links to additional information sources or facilitating further discussions, the sidebar enables students to delve deeper into the subject matter. The sidebar can also offer contextual or historical background, which supports the information by giving it greater depth and relevance in a real-world context. Moreover, the sidebar can show how an author uses other critics' works to construct counterarguments or support their interpretations.
When evaluating whether the sidebar effectively supports the passage, one would look for evidence like facts, statistics, or examples that align with the main points made in the passage. Additionally, suggestions for improvements such as providing transitions for better flow or expanding on narrative elements further illustrate the contributory role that sidebars can play in enhancing the main content.