Decide which of tools below are best suited for your study.
Evaluate your chosen tool(s) and explain clearly your rationale for choosing that particular tool(s).
E.g. if you choose to do interviews, who will you interview, how (face-to-face, video, telephone), how long will the interview be, will you record it and if so, what happens with the recording? You also have to think carefully about the research question and what data you want to get and then design the research protocol. That means thinking about the questions themselves and writing them out.