A person who publicly supports or recommends a particular cause or policy
Wow, that was good. I'd put more rhyming words depending on the poem you want it to be, but all in all great work.
Answer:
Personally I think that the questions that help a reader identify the authors purpose for writing are:
What type of text is this?
What is the central idea?
How does this text make one feel?
Answer: He might have gotten hit by a train or something