Part a and part b below contain one fill-in-the-blank to be used for all three question responses. your complete response must be in the format a, b, c including the letter choice, commas and a space after the commas. part a: which of the following best summarizes the main point of the third paragraph and list? fill in blank 1 using a, b, or c. a healthy microbe to human relationship is a balance we can study and understand. human guts tend to gather a range of microbes that maintain health. new studies suggest a wide variety of microbes is best for the human body. part b: select one quotation from the text that supports your answer to part a. add your selection