Write five points about the last time you where cooperate?

The prefix of the italicized word in the sentence is rather difficult

To choose a good persuasive essay topic,begin with a big idea,narrow it down,and a.then narrow it down more; it is impossible to have a topic that is too narrow. b.do some research to see what you should write about c.specify-ask a question you want answered in your argument

According to this article , in what way does the message about obesity need to be refined ?