The most important planning question for primary research is what will be asked, because this determines the type, quality, and relevance of the data that will be collected. The research question or hypothesis should be specific, narrow, and discoverable through primary research methods, and it should align with the research purpose and objectives. The research question or hypothesis guides the choice of the research medium, the sample size and selection, and the data analysis and interpretation.
References:
* What is Primary Research?: This article from Purdue OWL defines primary research and explains the steps and considerations involved in planning and conducting primary research.
* 10.3: Planning Your Primary Research Project: This article from Humanities LibreTexts provides some tips and examples on how to plan a primary research project, including defining the research question or hypothesis, choosing the research method, and designing the research instrument.