Start the process by:
Bear in mind that your supervisors will be looking for the following elements in your research question proposal:
The next step is to undertake a preliminary investigation on your research topic. You need to be sure that there is not already a wealth of information in the area and that a gap exists for the research you wish to conduct.
The preliminary investigation will help you to refine your topic area.
If your preliminary investigation into the literature is inconclusive or you cannot make headway then it is time to re-evaluate your research question. Try to answer the following questions:
York University, 2013 "Research Question Info Sheet".
Checklist of evaluation questions
To continue with this idea, use this checklist to evaluate your question:
Adapted from Duke Writing Studio: Duke University Thompson Writing Program, 2015 "What makes a good research question?"