How is “a brief study of guts” organized?

Question: How is “a brief study of guts” organized?

To understand how microbes populate the human body and what benefit they provide. Based on "A Brief Study of Guts," the statement that best summarizes the goal of new research into bacteria and microbes is that To understand how microbes populate the human body and what benefit they provide.

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i agree, but what is the question here?

explanation: