Providing background information will
a.
confuse most readers
b.
explain why you chose to write the essay
c.
link the introduction and conclusion
d.
readers follow your essay

It's to know your purpose before you read something because a purpose can:

Which of the following best describes the proper use of a "works cited" page? (a)-a works cited page is not needed if you paraphrase your research. (b)-a works cited page is not needed if you use signal phrases. (c)-a works cited page is optional when writing a researched text. (d)-a works cited page is required when writing a researched text.

As usual the nurse has trouble getting to the point what does juliet think happened before she learns the truth?