trả lời câu hỏi 4 và 5 bằng tiếng anh

4. A research question is a question that a research project sets out to answer. It is a crucial element in both quantitative and qualitative research as it guides the direction of the study. Defining research questions before carrying out a research study is important because it helps to focus the research, determine the specific objectives of the study, and guide the methodology. A well-defined research question ensures that the research addresses a relevant issue and helps in effective data collection and analysis. 5. The characteristics of a good research question include being clear and specific, focused in scope, relevant and concise, and formulated in a way that it cannot be answered with a simple "yes" or "no." Additionally, a good research question should express the main ideas of the study succinctly and guide the researcher in determining the appropriate methodology and search strategies for the literature review.