Answer:
when you want to adjust the focus of a topic after learning more about it
when you need to review the guidelines of your research assignment
when you need to find more sufficient evidence that supports your ideas
Step-by-step explanation:
Every writer needs to have a research plan before he starts writing. Before starting writing, it is important to know what topic will you discuss and to be unique. The research plan has to be well developed and clear, with arguments and information that was collected from different legit pages.
The research plan is a concise and short document that points out the most important points of research in a logical manner.