The best answer here is chronologically. If we read the excerpt, we can see that the author is starting at the beginning and following a timeline to describe each thing about Gertrude Belle Elion. The other options don't make much sense because there are no interviews cited, though there was obviously come research done. Cause and effect doesn't make sense because there isn't any sort of indication of the causes and effects of certain things except at the end when we find out she never earned her doctorate. The same holds true for problem-solution.
They are called unabridged!! hope that i helped :D
To make or become smaller in size
We can actually deduce here that the book that the author use in the passage is: Sibling relationships.
<h3>Who is an author?</h3>
An author is actually known to be a person who writes, publishes and sells the published book. Authors share their knowledge, expertise and experience through writing.
We see in the attached image the passage that completes the question.
Thus, the actual book the author used in this passage is that of sibling relationship.
Learn more about author on brainly.com/question/15816956
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